Question

Find the ragio p:r if p:a=1:2, a:b=2:3, b:c=5:1, c:r=3:2​

Answer 1

p : r = 5 : 2

Explanation:

Expressing the ratios in fractional form, then

`(p)/(r)` =
`(p)/(a)` ×
`(a)/(b)` ×
`(b)/(c)` ×
`(c)/(r)`

=
`(1)/(2)` ×
`(2)/(3)` ×
`(5)/(1)` ×
`(3)/(2)`

=
`(30)/(12)`

=
`(5)/(2)`

Thus ratio p : r = 5 : 2