In a place, cost of bananas is ₹ 24 per dozen while 10 apples are sold for ₹ 100. Then how many times an apple is costlier than a banana?
five times
A cost of 12 banana is ₹ 24, then the cost of one banana is 2412=2.
A cost of 10 apples is ₹ 100, then the cost of one apple is 10010=10.
A cost of one banana is equal to ₹ 2 while the cost of one apple is ₹ 10. The ratio of cost of the apple is to banana is 10:2 = 5.
∴ apple is five times costlier than the banana.