Same chapter1 markDifficulty: Medium
If a : b = 2 : 3 and b : c = 4 : 5, then a : c is:
Ratio and Proportion
3 marksDifficulty: Medium
If a : b = 3 : 4, find the value of (3a + 4b) : (5a − 2b).
Original Khojo Papers practice question — not from a past board paper.
Answer
25 : 7
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Let a = 3k and b = 4k. Then 3a + 4b = 9k + 16k = 25k and 5a − 2b = 15k − 8k = 7k, so the ratio is 25 : 7.
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