Question

A+B+C=724A ÷C=5REST36B÷C=4REST8

Answer 1

A + B + C = 724

A : C = 5 rest 36

B : C = 4 rest 8

A = 5 × C + 36

B = 4 × C + 8

5 × C + 36 + 4 × C + 8 + C = 724

10 × C + 36 + 8 = 724

10 × C + 36 = 724 - 8

10 × C + 36 = 716

10 × C = 716 - 36

10 × C = 680

C = 680 : 10

C = 68

A = 5 × 68 + 36

A = 340 + 36

A = 376

B = 4 × 68 + 8

B = 272 + 8

B = 280

Answer 2

A =5C+36

B=4C+8

5C+36+4C+8+C=724

10C+44=724/-44

10C=680/:10

C=68

A=5×68+36

A=376

B=4×68+8

B=272+8

B=280

V:376+280+68=444+280=724