Home > Prealgebra > Rates

Mr. Ito is spreading mulch in his yard. He spreads 4 2/3 square yards in 2 hours. How many square yards can he mulch per hour?

Answer 1

Gianna Caruso

#2 1/3" square yards"#

#2" hours "to 4 2/3#

#1" hour"to 4 2/3÷2#

To divide, first convert #4 2/3" to an improper fraction"#

#rArr4 2/3=14/3#

We now have #14/3÷2/1#

The remaining steps are.

• leave the first fraction

• change division to multiplication

• Invert the second fraction (turn upside down )

• Cancel, if possible and simplify

#rArr14/3xx1/2larr" multiply and invert"#

#=cancel(14)^7/3xx1/cancel(2)^1larr" cancelling"#

#=(7xx1)/(3xx1)=7/3=2 1/3#

He can spread #2 1/3# square yards of mulch in 1 hour working at the same rate.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Levi Adams

To find out how many square yards Mr. Ito can mulch per hour, divide the total square yards he can mulch (4 2/3) by the number of hours it takes him (2). Then, simplify the fraction if necessary. This will give you the rate of square yards per hour.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.