Question

If 5/4 : 7/3 = p : q and q : r = 9/2 : 21/4 , find p:r

Answer 1

Answer:

p : q = 5/4 : 7/3

p : q = 5/4 * 3/7

p/q = 15/28

p = 15q/28----(1)

q : r = 9/2 : 21/4

q : r = 9/2 * 4/21

q/r = 6/7

r = 7q/6---(2)

समीकरण (1) में समी.(2) का भाग देने पर

p / r = (15q/28) / (7q/6)

p : r = 45 : 98