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? Choose the correct choice from the following choices:
A) 4:5:6  B) 3:4:5  C) 1:2:3  D) 2:3:4  E) 3:2:1
Originally, let the number of seats for Mathematics, Physics and Biology be 5x, 7x and 8x respectively.   Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).   = (140/100 x 5x), (150/100 x 7x) and (175/100 x 8x)   = 7x, 21x/2 and 14x.   Therefore, The required ratio = 7x : 21x/2 : 14x   = 14x : 21x : 28x   = 2 : 3 : 4.   Answer is 2:3:4.
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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?