A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:
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A towel was bleached and lost some of its size. We need to find out how much the area decreased. 🤷♀️
Original Length = L 📏
Original Breadth = B 📏
Original Area = L × B 📊
After Bleaching… 💧
New Length = L – 20% of L = 0.8L 📏
New Breadth = B – 10% of B = 0.9B 📏
New Area = 0.8L × 0.9B = 0.72LB 📊
Decrease in Area = Original Area – New Area 📊
= L × B – 0.72LB
= 0.28LB
Percentage Decrease in Area = (Decrease in Area / Original Area) × 100 📊
= (0.28LB / LB) × 100
= 28% 👍
🎉 So, the area of the towel decreased by 28%! 🎉
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