Question

Reuben has 24 new magazine to read. Let's M be the number of magazines he would have left to read after reading R of them. Write an equation relating M to R. Then use this equation to find the number of magazine he would have left to read after reading 16 of them.

Answer 1

Given:

Total number of magazine is, N = 24.

Number of magazines left to read is M.

Number of magazined read by the person is R.

The objective is to write an equation relating M to R.

Since the total number of magazine is 24, then the equation can be represented as,

$\begin{gathered} \text{Total magazine=Number of magazines read+Number of magazines left} \\ 24=R+M \end{gathered}$

Hence, the required equation for the situation is obtained.

Now, if after reading 16 magazines (R), the number of magazines left (M) can be calculated as,

$\begin{gathered} 24=16+M \\ M=24-16 \\ M=8 \end{gathered}$

Hence, the number of magazines left after reading 16 magazines is 8.