## Kylie and her children went into a bakery and she bought \$10 worth of donuts and brownies. Each donut costs \$1.25 and each brownie costs \$2.

Question

Kylie and her children went into a bakery and she bought \$10 worth of donuts and brownies. Each donut costs \$1.25 and each brownie costs \$2.50. She bought twice as many donuts as brownies. Determine the number of donuts and the number of brownies that Kylie bought.

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1 week 2021-09-11T03:27:11+00:00 2 Answers 0

## Answers ( )

1. Answer:

4 donuts and 2 brownies

Step-by-step explanation:

Guess and check

2 donuts –> \$2.50

1 brownie –>\$2.50

Since the amount of donuts is double,

we try :

4 donuts –>\$1.25(4) = \$5

2 brownies –> \$2.50(2) = \$5

2. Answer:

she bought 4 donuts and 2 brownies.

Step-by-step explanation:

This is a question on simultaneous equations where two variable are given with two or more relational equations. if she bought \$10 worth of donuts and brownies, and each donut costs \$1.25 and each brownie costs \$2.50.

Then,

1.25d + 2.50b = 10 where d and b are the numbers of donuts and brownies purchased respectively.

if She bought twice as many donuts as brownies, then

d = 2b

Therefore,

1.25(2b) + 2.50b = 10

5b = 10

b = 2

d = 2 × 2 = 4

Hence she bought 4 donuts and 2 brownies.