Question

a:2=b:5=c:8,then 50%of a=20%of b= _% of c ​

Answer 1

Answer:

a+b=8 , b+c=10, c+a=12

a=8-b, c=10-b, 10-b+8-b=12; 18–2b=12; 6=2b; b=3

a=8–3=5, c-5=12; c=7, 3+7=10

a+b+c= 5+3+7=15

answer 15

Answer 2

Answer:

12.5%

a:2 = b:5 =c:8 ......(1

also 50% of a = 20% of b

which on solving gives

5a=2b in (1 also by exchanging

a:2= b:5 gives 5a= 2b

now 20%of b= x% of c

from 1) c=8b/5

20*b/100 = (x% * 8b/5)/100

100/8= x%

12.5=x%