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Chapter 3: Q. 77 (page 333)
81 is 75% of what number?
The number is 108.
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Two busses leave Billings at the same time. The Seattle bus heads west on I-90 at a speed of miles per hour while the Chicago bus heads east at a speed of miles an hour. How many hours will it take them to be miles apart?
Winston deposited $3,294 in a bank account with interest rate 2.6%. How much interest was earned in 5 years?
Find three consecutive even integers whose sum is 222.
A commercial jet and a private airplane fly from Denver to Phoenix. It takes the commercial jet 1.1 hours for the flight, and it takes the private airplane 1.8 hours. The speed of the commercial jet is 210 miles per hour faster than the speed of the private airplane. Find the speed of both airplanes.
Michaela has in dimes and nickels in her change purse. She has seven more dimes than nickels. How many coins of each type does she have?
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