# He paid $4.29 for every 3 protein bars he bought. He bought 9 protein bars in all. Which equation can be used to determine b, the total amount Coach Fowler spent on protein bars? ##### 1 Answer Dec 14, 2016 $b = \frac{9}{3} \times 4.29$$b = 12.97$#### Explanation: Coach pays $4.29 for 3 bars.

One method would be to divide $4.29 by 3 to find the price of one bar, because then it is possible to find the price of any number of bars. $4.29 div 3 = $1.43 per bar. Now you can make an equation: $b = 1.43 \times 9$Another method is to include the division by 3 in the equation : $b = \frac{9}{3} \times 4.29$This indicates that for every group of 3 bars, the price is$4.29.

The answer will be: b = \$12.87