If we know three numbers a, B and C, 13 of a is equal to 14 of B, 78 of B is equal to 712 of C, and C is 666 larger than a, then a=______ ，b=______ ，c=______ ．

If we know three numbers a, B and C, 13 of a is equal to 14 of B, 78 of B is equal to 712 of C, and C is 666 larger than a, then a=______ ，b=______ ，c=______ ．

Because 13 of a is equal to 14 of B, that is, a × 13 = B × 14, then B = 43A; 78 of B is equal to 712 of C, that is, B × 78 = C × 712, then B = 23C, then 43A = 23C, so C = 2A is 666 larger than a, that is, C-A = 666, then 2a-a = 666 & nbsp; & nbsp; & nbsp; a = 666b = 43A = 43 × 666 = 888; C = 2A = 666 × 2 = 1332

There are three numbers a, B, C, a: B = 4:3, B: C = 2:5, a + B + C = 29 / 15. What is a / B + C * a equal to?

A:B:C=8:6:15
A+B+C=29/15
Then a = 8 / 15
C=1
A/B+C*A=4/3+8/15=28/15

Given three numbers a, B and C, 1 / 3 of a equals 1 / 4 of B, 7 / 8 of B equals 7 / 12 of C, and C is 15 larger than a, then a =, B =, C =

A/3=B/4 A=3B/4
7B/8=7C/12 C=3B/2
C-A=3B/2-3B/4=15 B=20
A=3B/4=15
C=3B/2=30