Question

18. Find a :c when (1) a: b=2 :5 and b=4:7, and (2)a : b=1 1/2 : 1 2/3 and b : c = 1 2/3 : 5.

Answer 1

1) it's in complete c is not given in any ratio...

2) a/b=3/2:5/3

b/c=5/3:5

a/b×b/c

=a/c=3/2:5

1+1/2:5 or

$1 \frac{1}{2}: 5$

ANS

FOLLOW