Question

Pecans cost $2.70 per kilogram. Cashews

cost $2.50 per kilogram. The number of
kilograms of pecans is one more than the
number of kilograms of cashews. How many
kilograms of cashews are needed to make a
bag to sell at $28.70?​

Answer 1

Answer: 12kg

Explanation:

$28.70 / $2.50 = 11.48kg —> 12kg

Answer 2

5 Kg

Explanation:

Let:

The number of kilograms of pecan is x

The number of kilograms of cashew is y

2.7x + 2.5y = 28.7 --------Equation 1

x = y - 1 -----------------------Equation 2

Put the values of y

2.7(y - 1) + 2.5y = 28.7

2.7y + 2.7 + 2.5y = 28.7

5.2y = 26

y = 5 kg