Question

the number of customers waiting inside a restaurant was 2 less than a third of those waiting inside. if three customers were waiting inside how many were outside​

Answer 1

Answer:

15 customers were outside

Step-by-step explanation:

Represent customers inside with x and customers outside with y.

So, we have:

$x = \frac{1}{3}y - 2$ --- First Statement

$x = 3$ --- Second Statement

Required

Find y

Substitute 3 for x in $x = \frac{1}{3}y - 2$

$3 = \frac{1}{3}y - 2$

Add 2 to both sides

$2 + 3 = \frac{1}{3}y - 2 + 2$

$2 + 3 = \frac{1}{3}y$

$5= \frac{1}{3}y$

Multiply both sides by 3

$3 * 5= \frac{1}{3}y *3$

$15 = y$

$y = 15$

Hence; 15 customers were outside