Question

find a and c when 1) a:b=2:5 and b:c=4:7

Answer 1

the value of is when a:b=1:5 and b:c=4:7
7

Answer 2

a:b=2:5

b:c=4:7

So, a×b:b×b:b×c

A : B : C

= 2×4:5×4:5×7

= 8 : 20 : 35

It is told to find A: C

So, a:c = 8:35.