Question

Can someone please solve 7???

Answer 1

Area of B = 609 cm^2.

Explanation:

A:B = 5:3 so

A/B = 5/3 .............(1)

also we are guven that

A + B = 1624..........(2)

From equation (1) 3A + 5B so

B = 3A / 5 = 0.6A.

Substitute for B in equation (2):

A + 0.6A = 1624

A = 1624/ 1.6

A = 1015

and B = 1624 - 1015

= 609 cm^2.

Answer 2

A

Explanation:

Sum the parts of the ratio, 5 + 3 = 8 parts

Divide the total area by 8 to find the value of one part of the ratio.

1624 ÷ 8 = 203 cm² ← value of 1 part of ratio, thus

Area of B = 3 × 203 = 609 cm² → A