Question

the table shows the number of coins each person has in his or her pocket.
pocket change
name quarters dimes nickels pennies
kim 1 3 2 3
tony 0 6 1 6
nick 2 4 0 2
kim spent $\frac{40}{100}$ of a dollar on a snack. find the amount she has left as a money amount.
enter the correct decimal dollar amount in the box.

Explanation:

Step1: Calcular dinero inicial de Kim

Calcular el valor de cada moneda y sumar:
$$(1 \times 0.25) + (3 \times 0.10) + (2 \times 0.05) + (3 \times 0.01) = 0.25 + 0.30 + 0.10 + 0.03 = 0.68$$

Step2: Convertir gasto a decimal

El gasto es $\frac{40}{100} = 0.40$

Step3: Restar gasto al dinero inicial

$$0.68 - 0.40 = 0.28$$

Answer:

$0.28$