Question

The two rectangles A and B have the same area. The dimensions of A are (2y) cm by 5 cm. The dimensions of B are 8 cm by (y + 1) cm. Calculate the value of y.

Answer 1

Area of rectangle A=(2y)(5)=10y    

Area of rectangle B=(8)(y+1)=8y+8

Given areas are equal

10y=8y+8

2y=8

y=4

The value of y is 4cm