If a : b = 3 : 4 and b : c = 5 : 7, find a : b : c.
यदि a : b = 3 : 4 और b : c = 5 : 7 है, तो a : b : c ज्ञात कीजिए।
This Question Asked In:
SSC, CGL
Correct Answer :A - 15 : 20 : 28
Detailed Text Solution
Given a : b = 3 : 4 and b : c = 5 : 7.
To make b common, LCM of 4 and 5 = 20.
Multiply first ratio by 5:
a : b = 15 : 20.
Multiply second ratio by 4:
b : c = 20 : 28.
Therefore,
a : b : c = 15 : 20 : 28.