Arithmetic (Time and Work)

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1) A can do a piece of work in 20 days and B can do the same work in 30 days. In how many days will A and B together complete the work?

A) 10 days

B) 12 days

C) 15 days

D) 18 days

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2) A and B can complete a work in 30 days. If they work together for 15 days, then what fraction of the work is left?

A) 1/4

B) 1/3

C) 2/3

D) 3/4

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3) A can complete a work in 40 days and B can complete the same work in 60 days. If they work together for 8 days, then what fraction of the work is left?

A) 1/5

B) 1/6

C) 1/8

D) 1/10

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4) A and B can complete a work in 24 days. If they work together for 16 days, then what fraction of the work is left?

A) 1/3

B) 1/4

C) 1/6

D) 2/3

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5) A can complete a work in 36 days and B can complete the same work in 54 days. If they work together for 6 days, then what fraction of the work is left?

A) 1/6

B) 1/9

C) 1/12

D) 1/18

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6) A can complete a work in 18 days and B can complete the same work in 27 days. If they work together for 9 days, then what fraction of the work is left?

A) 2/3

B) 1/3

C) 1/6

D) 5/6

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7) A and B can complete a work in 15 days. If they work together for 8 days, then what fraction of the work is left?

A) 1/15

B) 1/3

C) 7/12

D) 2/3

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8) A can complete a work in 16 days and B can complete the same work in 24 days. If they work together for 8 days, then what fraction of the work is left?

A) 1/8

B) 1/6

C) 1/4

D) 3/4

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9) A and B can complete a work in 12 days. A can complete the work alone in 24 days. How many days will it take for B to complete the work alone?

A) 18

B) 20

C) 24

D) 30

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10) A can complete a work in 30 days and B can complete the same work in 45 days. If they work together for 6 days, then what fraction of the work is left?

A) 1/5

B) 1/6

C) 1/8

D) 1/9

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11) A and B can complete a work in 20 days. If they work together for 5 days, then what fraction of the work is left?

A) 1/4

B) 1/5

C) 1/6

D) 1/8

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12) A can complete a work in 24 days and B can complete the same work in 18 days. If they work together for 6 days, then what fraction of the work is left?

A) 1/8

B) 1/6

C) 2/3

D) 3/4

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13) A can complete a work in 10 days and B can complete the same work in 15 days. If they work together for 3 days, then what fraction of the work is left?

A) 1/10

B) 1/5

C) 1/2

D) 2/3

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14) A and B can complete a work in 18 days. If they work together for 12 days, then what fraction of the work is left?

A) 1/18

B) 2/3

C) 2/9

D) 7/9

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15) A, B, and C can complete a work in 16 days. A can complete the work alone in 32 days. How many days will it take for B and C to complete the work together?

A) 8

B) 10

C) 12

D) 14

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16) A, B, and C can complete a work in 10 days. B can complete the work in 15 days. How many days will it take for C to complete the work?

A) 20

B) 25

C) 30

D) 35

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17) A can complete a work in 20 days and B can complete the same work in 10 days. If they work together for 6 days, then what fraction of the work is left?

A) 1/2

B) 1/3

C) 1/4

D) 2/3

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18) A can complete a work in 25 days and B can complete the same work in 20 days. If they work together for 5 days, then what fraction of the work is left?

A) 1/4

B) 1/5

C) 1/6

D) 1/8

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19) A can complete a work in 12 days and B can complete the same work in 15 days. If they work together for 4 days, then what fraction of the work is left?

A) 1/12

B) 1/6

C) 2/3

D) 5/6

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20) A and B can complete a work in 15 days. If they work together for 10 days, then what fraction of the work is left?

A) 1/15

B) 1/3

C) 7/12

D) 2/3

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21) A, B, and C can complete a work in 24 days. A can complete the work in 48 days. How many days will it take for B and C to complete the work?

A) 12

B) 16

C) 18

D) 20

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22) A can complete a work in 12 days and B can complete the same work in 18 days. If they work together for 3 days, then what fraction of the work is left?

A) 5/6

B) 2/3

C) 1/3

D) 1/6

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23) A can complete a work in 15 days and B can complete the same work in 10 days. If they work together for 5 days, then what fraction of the work is left?

A) 1/6

B) 1/3

C) 1/2

D) 2/3

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24) A and B can complete a work together in 40 days. They worked together for 25 days and then B left. After another 10 days, A completed the remaining work. In how many days A alone can complete the work?

A) 50

B) 60

C) 70

D) 80

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25) A and B can complete a work in 8 days. B and C can complete the same work in 12 days. A, B, and C can complete the work in how many days?

A) 5

B) 6

C) 7

D) 8

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26) A can do a work in 15 days and B in 20 days. If they work together for 4 days, then what fraction of the work is left?

A) 1/15

B) 7/12

C) 1/12

D) 8/15

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Arithmetic (Time and Work)