Question

Explain how to check whether the answer is reasonable.



Monica made 350 cookies for the bake sale. She sold them for $0.65 each. She sold of the cookies.



How much money did Monica collect?











A.

Answer: $172.00.

Explanation: Explanation: She sold of the cookies, so she sold 280 cookies. If she charged 50¢ per cookie, she would have collected $140.00. Because she sold the cookies for 65¢ each, she collected more than $140.00.








B.



Answer: $182.00.

Explanation: If she sold all of the cookies,

Answer 1

she sold 4/5 of cookies

Answer 2

B.



Answer: $182.00.

Explanation: If she sold all of the cookies, she would have collected $227.50. Because she only sold 4/5 of the cookies, she collected less than $227.50.










C.



Answer: $207.50.

Explanation: If she sold all of the cookies, she would have made $227.50. But she didn't sell 1/5 of the cookies. If 1/5 is subtracted from $227.50, the answer is about $207.00.

Answer 3

A 4/5 sold thats missing

Answer 4

C? i think

Answer 5

so the dollars should be
350 * 0.8 * 0.65

or
350 * 4/5 * 65/100

the second way we can do in our head
350/5 = 70
4*70= 280

280*65/100
28 * 65/10
14 * 65/5
14*13

169+13= 182

Answer 6

though a calculator is faster

Answer 7

B

Answer 8

@mathmale

Answer 9

@Mehek14