regulatoryBody RBI Office Attendant Mock Test 2021 Quantitative Aptitude Average

The mean weight of three children A, B and C is 26 kg and that of B, C and D is 23 kg. If the weight of D is 4/7 that of A, find the weight of D.

1
15 kg
2
12 kg
3
20 kg
4
18 kg
5
30 kg
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