The seats for Mathematics, Physics and Biology in a college are in the ratio 4 : 5 : 6. It is proposed to increase them by 50%, 20% and 25% respectively. What will be the new ratio?
A. 5 : 6 : 7
B. 2 : 3 : 4
C. 3 : 4 : 5
D. 4 : 4 : 5
A. 5 : 6 : 7
B. 2 : 3 : 4
C. 3 : 4 : 5
D. 4 : 4 : 5
Best answer
Answer: D. 4 : 4 : 5
Answer: (D) 4 : 4 : 5
New seats: 4 × 1.5 : 5 × 1.2 : 6 × 1.25 = 6 : 6 : 7.5.
Multiply by 2 and divide by 3: 12 : 12 : 15 = 4 : 4 : 5.
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