A rectangle plate has an area of 80 sqm. If its length is 5 times than the breadth, then length of the plate

Question

choice
a). 16
b) 20
c) 4
d) 80

Answer 1

b

Answer 2

The answer is b). The length is 20 and the breadth is 4. 20 is 5 times more than 5. And 20 times 4 equals 80.

Answer 3

K so the length of the plate is longer than the breadth, so let's define the breadth as x metres.

breadth = x m
length = 5x m

So the area of the plate in terms of x
= (breadth) times (length)
= 5x^2.

Area of plate = 5x^2 = 80 m^2

x = ?
so 5x = ?
Find x, then find the length.