1.

If A: B =5: 6 and B: C = 4: 7, find A: B: C.

Answer»

A: B = 5: 6 and B: C = 4: 7

HCF of 5 and 6 is 1

= (5/6)

Then,

B: C= (4 × (6/4))/ (7 × (6/4))

B: C = (6 / (21/2))

B: C = 6: (21/2)

∴ A: B: C = 5: 6: (21/2)

A: B: C = 10: 12: 21



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