Question

Height of a wall at the end of 3rd day is 4.33 feet. If the height of the wall at the end of 4th day is 9.85 feet, find the height of the wall constructed on 4th day?

• A. 5.33 feet
• B. 5.85 feet
• C. 5.25 feet
• D. 5.52 feet

Answer 1

The correct option is D 5.52 feet

Height of the wall at the end of 3rd day = 4.33 feet
Height of wall at the end of 4th day = 9.85 feet

Height of wall constructed on 4th day = Difference of heights of the wall at the end of 4th day and 3rd day.

So, height of the wall constructed on 4th day = (9.85 - 4.33) feet

For subtraction of decimal numbers, align the decimal points of the numbers and then subtract them.
9.85
$-$ 4.33
_______
5.52
So, the height constructed on 4th day = 5.52 feet