Question

Roberto needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. Drag cookies and brownies into the box to show how many Roberto needs for 10 plates.

Answer 1

91. Robert needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. Now, he need to make 10 plates. How many cookies and brownies will he need to be able to make this 10 plates. Solve: => 4 plates = 6 cookies and 2 brownies => 8 plates = (6 cookies + 6 cookies) and (2 brownies + 2 brownies) = 12 cookies and 4 brownies => 10 plates = (12 cookies + 3 cookies) and (4 brownies + 1 brownies) = 15 cookies and 5 brownies in all.

Answer 2

Solution: Roberto needs 15 cookies and 5 brownies for 10 plates.

Step-by-step explanation:

It is given that for every 4 plates Roberto needs 6 cookies and 2 brownies and we have to find the number of cookies and brownies required for 10 plates.

First of all we have to find the number of cookies and brownies for one plate.

4 plates = 6 cookies

1 plate
`=(6)/(4)` cookies

10 plates =
`(6)/(4)(10)=15`

For 10 plates the 15 cookies are required.

4 plates = 2 brownies

1 plate
`=(2)/(4)` brownies

10 plates =
`(2)/(4)(10)=5`

For 10 plates the 5 brownies are required.

Therefore, Roberto needs 15 cookies and 5 brownies for 10 plates.