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Problem Solving (PS) | Re: A grocery store bought some mangoes at a rate of 5

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Resolved it through primes
some mangoes at a rate of 5 for a dollar - so 5 is the known prime factor
one stack was sold at a rate of 3 for a dollar - so 3 is the known prime factor
and the other at a rate of 6 for a dollar - so 2 and 3 are prime factors

total (avoiding duplicating 3) - 5 * 2 * 3 = 30
so if 30 mangoes were bought then the dollar amount is 6

how we can divide 30 in 2 stacks by keeping the same total dollar amount
2*3 = 2$ and 6 * 4 = 4$

Then ration between first stack and the
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