Question

If A:B=2:5 and B:C=2:7. Divide 2800 among A,B,C.​

Answer 1

Answer:

A=1600/7

B=4000/7

C=2000

Step-by-step explanation:

A:B=2:5

~A:B=4:10. [eq.1]

B:C=2:7

~B:C=5:35. [eq.2]

From eq.1 and eq.2, we get

A:B:C=4:10:35

Let A=4x

B=10x

and,C=35x

so,4x+10x+35x=2800

~49x=2800

~x=400/7

Hence,A=4x=1600/7

B=10x=4000/7

C=35x=2000