Question
Download Solution PDFThe seats for Mathematics, English and Chemistry in a school are in the ratio of 6 ∶ 4 ∶ 7. If these seats are increased by 20%, 40% and 60%, respectively, the ratio of the increased seats is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
Seats for Mathematics, English and Chemistry in a school are in the ratio of 6 ∶ 4 ∶ 7.
Seats are increased by 20%, 40% and 60%.
Calculation :
Let the seats for Mathematics, English and Chemistry are 600, 400, 700.
Seats are increased by 20%, 40% and 60%.
⇒ 600 × 120/100 : 400 × 140/100 : 700 × 160/100
⇒ 600 × 120 : 400 × 140 : 700 × 160
⇒ 72000 : 56000 : 112000
⇒ 72 : 56 : 112
⇒ 9 : 7 : 14
∴ The correct answer is 9 : 7 : 14.
Last updated on Jul 12, 2025
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