Discussion :: Ratio and Proportion
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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?
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Answer : Option A
Explanation :
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).
\([ \frac { 1 40} { 100 } \) x 5x ] ,\([ \frac { 1 50} { 100 } \)x 7x ] and \([ \frac { 1 75} { 100 } \) x 8x]
7x,\( \frac { 21 X} { 2 } \) and 14x
The required ratio = 7x :\( \frac { 21 X} { 2 } \):14 x
14x : 21x : 28x
2 : 3 : 4
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