Question

if p:q =5:6 and q:r =4:7 then p:q:r=?

Answer 1

here is the solution-

Answer 2

p : q : r = 10 : 12 : 21

Step-by-step explanation:

We have,

p : q = 5 : 6     .....(1)

and,

q : r = 4 : 7       .....(2)

To find, the value of p : q : r=

Multiplying (1) by 2, we get

p : q = 5 × 2 : 6  × 2  

⇒ p : q = 10 : 12         .....(3)

Multiplying (3) by 3, we get

q : r = 4 × 3 : 7 × 3

⇒ q : r = 12 : 21     .....(4)

Using (3) and (4), we get

p : q : r = 10 : 12 : 21

Hence, p : q : r = 10 : 12 : 21