Question

A person has purchased two adjacent plots, one is in rectangular shape and other is in square shape and combined them to make a single new plot. The breadth of the rectangular plot is equal to the side of the square plot and the cost of fencing the new plot is Rs. 470 (Rs. 5/m). Find the side of square if the length of the rectangular plot is 20 m.
A. 12 m
B. 13 m
C. 13.5 m
D. 8.5 m

Answer 1

Correct Answer - D

Let the breadth of rectangular plot be y m and length = 20 m
ATQ,
`40+y+3y=470//5`
`rArr 40+4y=94`
`rArr 4y=54rArry=13.5 m`