Question

A student solved this problem and said the answer is 81 2 pounds. Jill's club bought 42 5 pounds of hot dogs, 31 2 pounds of hamburger, and 23 10 pounds of chicken for the picnic. How much meat did they buy altogether? Is the student's answer reasonable? No, the answer is not reasonable. It should be about 12 pounds. No, the answer is not reasonable. It should be about 15 pounds. No, the answer is not reasonable. It should be about 10 pounds. Yes, the answer is reasonable.

Answer 1

D. No the answer is not reasonable. it should be about 10 pounds.

I took the test.

Answer 2

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

Explanation:

Given,

The quantity of hot dog bought by Jill's club =
`4(2)/(5)` pounds,

Hot dog =
`3(1)/(2)` pounds

Hamburger =
`2(3)/(10)` pounds

So, the total quantity of meat they bought

`=4(2)/(5)+3(1)/(2)+2(3)/(10)`

`=(22)/(5)+(7)/(2)+(23)/(10)`

`=(44+35+23)/(10)` ( Adding fractions ),

`=(102)/(10)`

`=10.2\text{ pounds}`

Since,
`8(1)/(2)=(17)/(2)=8.5`

`\implies 8.5\\eq 10.2`

Hence, the student's answer is not reasonable it should be about 10 pounds.

Third option is correct.