Test Index

Ratio and Proportion

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Question : 23 of 112

Marks: +1, -0

If

2 A=3 B

4 B=5 C,

A: C

is

$4: 3$
$15: 8$
$8: 15$
$3: 4$

Solution:

Concept:

Find the ratio

A:C

by linking through the common term

B

.

Explanation:

From

2A = 3B

, we get

A : B = 3 : 2

.

From

4B = 5C

, we get

B : C = 5 : 4

.

To combine, make the

B

values equal: multiply the first ratio by

5

and the second by

2

.

Thus

A : B = 15 : 10

and

B : C = 10 : 8

.

Therefore,

A : C = 15 : 8

.

Answer:

A:C = 15:8

(Option B).

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