Answers

2015-07-31T21:21:02+08:00
What ? i know im slow but can you make it easy?
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2015-08-01T00:35:14+08:00


If A+B+C= 47 and A=15 then B&C=32.

If B+C+D= 53 and B&C=32 then D=21

If C+D+A= 55 and D&A=36 then C=19

If D+A+B= 49 and D&A=36 then B=13

Therefore, the four unknown numbers are:
A=15
B=13
C=19
D=21
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