Question

A student solved this problem and said the answer is 8 1/2 pounds.

Jill's club bought 4 2/5 pounds of hot dogs, 3 1/2 pounds of hamburger, and 2 3/10 pounds of chicken for the picnic. How much meat did they buy altogether?

Is the student's answer reasonable?

A.
Yes, the answer is reasonable.

B.
No, the answer is not reasonable. It should be about 10 pounds.

C.
No, the answer is not reasonable. It should be about 12 pounds.

D.
No, the answer is not reasonable. It should be about 15 pounds.

Answer 1

@nikvist

Answer 2

@WorkHelp!!!

Answer 3

someone help

Answer 4

well, using estimation I could round down each number

4 2/5 rounds down to 4
3 1/2 rounds down to 3
2 3/10 rounds down to 2

4+3+2 = 9, but since we rounded down a bit we know that the answer MUST be greater than 9

it looks like all the fractions add up to about 1 (using my calculator I get 6/5)

so, 9 + 6/5 is closest to which of the answer choices?

Answer 5

a @Vocaloid

Answer 6

no, please try again...

9 + 6/5 is closest to which of the choices?

Answer 7

b

Answer 8

great, but do you understand why A is wrong? I want to make sure you aren't just guessing...

Answer 9

so b and yeah!

Answer 10

then please explain why A is wrong

Answer 11

well since we got 9 its not a because there is nothing that is alomst the same as 9

Answer 12

great good job ~