Question

The formula I = PRT where I = Interest, P = principal, R = rate, and T = time is used to calculate the amount of simple interest earned. Solve this formula for T.

Answer 1

I = PRT
I\PR = T

I just divided both sides by PR.

Answer 2

`2a^2+2a-11`

Explanation:

Given,

`C = 2a^2 - 5------(1)`

`D=3 - a-------(2)`

Thus,

`C-2D = 2a^2 - 5-2(3 - a)` ( From equation (1) and (2) )

`=2a^2 - 5 - 6 + 2a` ( By distribution property )

`=2a^2+2a-11` ( Combined constant )

Hence, C - 2D is equal to
`2a^2+2a-11`