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Let's denote the present age of the son as x. The man is 24 years older than his son, so the man's present age is x + 24. In two years, the son's age will be x + 2, and the man's age will be x...

Another method Let's count the numbers from 1 to 70 that have 1 or 9 in the unit's digit: Numbers with 1 in the unit's digit: 1, 11, 21, 31, 41, 51, 61 Numbers with 9 in the unit's digit:...

Let's denote the original number of apples as x. The fruit seller sells 40% of the apples, which means he sells 0.4x apples. The remaining apples are 60% of the original, which is 0.6x. Given...

Let's denote the marks obtained by the first student as x and the second student as y. Since one student secured 9 marks more than the other: x = y + 9 or y = x + 9 (we'll consider both cases)...

Let's denote the duration for which B joined the business as x months. A invests Rs. 85,000 for the entire year (12 months). B invests Rs. 42,500 for x months. The profit-sharing ratio is 3:1....

Let's denote B's contribution to the capital as x. A invests Rs. 3500 for the entire year (12 months). B invests x for 7 months (12 - 5). The profit-sharing ratio is 2:3. Since the profit...

Let me solve this step by step. 1) Let's understand the given information: * Profit ratio = 5 : 7 : 8 * Partner 1 invested for 14 months * Partner 2 invested for 8 months * Partner 3 invested for...

Let's denote the amount subscribed by C as x. Since B subscribes Rs. 5000 more than C: B's subscription = x + 5000 Since A subscribes Rs. 4000 more than B: A's subscription = (x + 5000) + 4000...

A's share of the profit is Rs. 855, and the ratio of A's investment to B's investment is 3:2. Let's denote the total profit as x. A's share of the profit is 3/5 of the remaining profit after 5%...

Cost Price (CP) of 26 kg rice = 26 × 20 = Rs. 520 CP of 30 kg rice = 30 × 36 = Rs. 1080 Total CP = 520 + 1080 = Rs. 1600 Total quantity of rice = 26 + 30 = 56 kg Selling Price (SP) of 56 kg rice...