1.

Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

Answer»

2:3:4



Originally, let the number of seats for MATHEMATICS, Physics and Biology be 5x, 7x and 8x respectively. Number of increased SEARS are (140% of 5x), (150% of 7x) and (175% of 8x)

i.e., (140/100 * 5x), (150/100 * 7x) and (175/100 * 8x)

i.e., 7x, 21x/2 and 14x

Required RATIO = 7x:21x/2:14x

= 14x : 21x : 28x = 2:3:4



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