Word problem

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Lgj7801

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Feb 1, 2022
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My younger cousin asked me to solve the below word problem he found on a video game called roblox. It seems so straightforward but the game tells me I am wrong. It's driving me nuts so would love if someone can assist.
Here's the problem:
"Penny's bicycle wheel has a radius of 35cm and rotates about 98 times per min. If Penny's school is 8616.16 meters away, how many minutes does it take her to ride to school? (Use 3.14 for pi)."
 
1) Use circumference of the wheel to find distance traveled during one revolution. So 2r*3.14 => 219.8 cm travelled per revolution.
2) Multiply by 98 to get cm/min => 21,540.4 cm travelled /min
3) divide by 100 to convert rate into meters => 21,540.4/100= 215.404 meters travelled/min
4) divide total distance needed to travel by rate to see how many minutes the trip will take => 8616.16/215.404 = 40 minutes

Thank you
 
Lgj7801 said:
1) Use circumference of the wheel to find distance traveled during one revolution. So 2r*3.14 => 219.8 cm travelled per revolution.
2) Multiply by 98 to get cm/min => 21,540.4 cm travelled /min
3) divide by 100 to convert rate into meters => 21,540.4/100= 215.404 meters travelled/min
4) divide total distance needed to travel by rate to see how many minutes the trip will take => 8616.16/215.404 = 40 minutes

Thank you
Click to expand...
I think that the wheel DIAMETER is 35 cm.

I did not see any mistake in your approach to the problem.
 
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