Step-by-step explanation:
let's denote sum as S
if 2/3 parts of sum is 420 we get,
2/3 * S = 420
S= 420*3/2
S=630
now,
to find 3/5 parts of the sum we calculate:
=3/5 * 630
= 378
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Answers & Comments
Step-by-step explanation:
let's denote sum as S
if 2/3 parts of sum is 420 we get,
2/3 * S = 420
S= 420*3/2
S=630
now,
to find 3/5 parts of the sum we calculate:
=3/5 * 630
= 378