Lisa is 6 centimeters taller than her friend ian. ian is 10 centimeters taller than jim. every month, their heights increase by 2 centimeters. in 5 months, the sum of ian's and jim's heights will be 140 centimeters more than lisa's height. how tall is ian now? let h be ian's height today in centimeters.

Lan is 146 centimeters tall now.

Explanation

Let, Lan's current height is centimeters

As Lisa is 6 centimeters taller than Lan and Lan is 10 centimeters taller than Jim, so Lisa's current height = centimeters and Jim's current height = centimeters.

Every month, their heights increase by 2 centimeters.

So, after 5 months.....

Lan's height = centimeters,

Lisa's height = centimeters and

Jim's height = centimeters

Given that, the sum of Ian's and Jim's heights will be 140 centimeters more than Lisa's height in 5 months. So the equation will be....

So, the current height of Lan is 146 centimeters.

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.