Test Index

Ratio and Proportion Practice Test 5

© examsnet.com

Question : 10 of 25

Marks: +1, -0

IF

A=\frac{1}{4}B

B = \frac{1}{2}C

, then A : B : C is:

8 : 4 : 1
4 : 2 : 1
1 : 4 : 8
1 : 2 : 4

Solution:

Concept:

Express all quantities in terms of one variable, then compare them as a ratio.

Explanation:

Given

A=\frac{1}{4}B

, so

B=4A

.

Given

B=\frac{1}{2}C

, so

C=2B

.

Substitute

B=4A

into

C=2B

:

C=2(4A)=8A

.

Thus,

A:B:C=A:4A:8A

.

Cancelling the common factor

A

, we get

1:4:8

.

Answer:

A:B:C=1:4:8

, which matches option C.

© examsnet.com

Go to Question:

Prev Question

Next Question