Question

One day Jhumpa noticed that the walls of her house were losing its shine and were getting deteriorated. So she called a painter and asked him to repaint their house. The painter took 3 days to complete one wall of her house. How many walls of the same size will the painter paint in 1 month if it is the month of April?

• A. 15
• B. 10
• C. 8
• D. 5

Answer 1

The correct option is B

10

In 3 days he paints 1 wall.
Month of April have 30 days.
Let "x” be the number of walls he can paint in 30 days.
The ratio of number of days to number of walls he paints is 3 : 1.
For 30 days also, the ratio of number of days to number of walls should be equivalent to 3 : 1.
Let the number of walls painted in 30 days is x.
(Number of days) / (Number of walls) = (3/1) = (30/x)

x = 30/3 = 10 walls