When Andrei surveyed 36 random seventh-grade students in the lunchroom, he found that 7 out of 9 would like to try or have already tried snorkeling. Using proportional reasoning, about how many of the 810 seventh-grade students in his school would like to snorkel?
Answer
A
About 630 seventh-grade students would like to snorkel.
B
About 157 seventh-grade students would like to snorkel.
C
About 720 seventh-grade students would like to snorkel.
D
About 202 seventh-grade students would like to snorkel.
Explanation
The survey found that 7 out of every 9 students would like to snorkel, so estimate 7/9 of the 810 seventh-graders. Since 810 ÷ 9 = 90, multiply 90 × 7 = 630. About 630 seventh-grade students would like to snorkel.
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