Sir in the ratio of girls to boys converted to the simplest form i did it like this :


220/280 =110/140 = 60/70 = 6/7 the answer came out to be wrong . Can you tell me what is the right way ?

The given number is 220280.Now, the prime factorisation of 220 and 280 is,220 = 2×2×5×11280 = 2×2×2×5×7HCF of 220 and 280 = 2×2×5 = 20Now, 220280 = 220 ÷ 20280 ÷ 20 = 1114

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