Question

The length of a box is measured as 25 cm instead of
40 cm. What is the % error in the measurement?
A) 7.5

B) 12.5
C) 25
D) 37.5

Answer 1

A 7.5 so ans is a) 7.5

Answer 2

Answer:

D) 37.5

Explanation:

40 cm = 100%

then, 25 cm = 100×25/40

= 62.5%

therefore, % of error in measurement = 100% - 62.5%

= 37.5%