Question

three numbers a b and c are in a ratio 4:6:7. If b=5.40, find a and c.

Answer 1

Let x is included with the given ratio 4:6:7
hence  a =4x, b = 6x, c  =7x
now ,
     b =  6x 
⇒ 5.40 = 6x
⇒ x = 5.40/ = 54/60 = 0.9
⇒ x = 0.9

now,
a = 4x = 4× 0.9 =  3.6
 
c =  7x = 7 × 0.9 = 6.3