A sales tax of 13% increased the cost of a meal to 32.70. What was the cost of the meal before sales tax

解

A s a l es t a x o f 13% in cre a se d t h e cos t o f a m e a l t o 32.70. Wha t w a s t h e cos t o f t h e m e a l b e f ore s a l es t a x

Amount before tax : 28.93805 \dots

解答ステップ

Translate the problem into an equation:

32.7 = x + 0.13 x

32.7 = x + 0.13 x : x = \frac{3270}{113}

\frac{3270}{113} = 28.93805 \dots

Amount before tax : 28.93805 \dots