Question

Lisa is 8 centimeters taller than her friend lan. lan is 12 centimeters taller than Jim. Every month, their

heights increase by 2 centimeters. In 6 months, the sum of lan's and Jim's heights will be 160 centimeters
more than Lisa's height. How tall is lan now? Let h be lan's height today in centimeters.
(h +12)+(
) + 12 =(
) + 12 + 160
lan is
centimeters tall now.
Explain Concept 4

Answer 1

Answer: Jim's height is 156 cm, Ian's height is 168 cm, and Lisa's height is 176cm.

Explanation:

Jim = x.

Ian = (x + 12)

Lisa = (x + 12 + 8) = (x + 20)

1 months * 2 cm = 12 cm in 6 months

J = (x + 12)

I = (x + 24)

L = (x + 32)

Jim and Ian

Lisa

(x + 12 + x + 24) - (x + 32) = 160

2x + 36 - x - 32 = 160

2x-x 36-32

x + 4 = 160

-4 -4

x = 156*

*This is Jim's height as he is the base.

J = 156 cm

I = (x + 12) = 168 cm

L = (x + 20) = 176 cm

Answer 2

yu

Explanation: