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人気のある Word Problems >

A family drives 4 1/2 miles in 1/10 of an hour. What is their rate of speed in miles per hour?

解

A f ami l y d r i v es 4 \frac{1}{2} mi l es in \frac{1}{10} o f an h o u r . Wha t i s t h e i r r a t e o f s p ee d in mi l es p er h o u r ?

解

speed : 45

解答ステップ

Translate the problem into an equation:

\frac{9}{2} = x \frac{1}{10}

x

を解く

\frac{9}{2} = x \frac{1}{10} : x = 45

speed : 45

人気の例

Joe went for a drive in her new car. She drove for 142.5 miles at a speed of 57 mph. For how many hours did she drive?It takes Erin 16 hours to drive 1200 miles from Gainesville to New York. What is her 平均 speed in miles per hour if Nelson traveled 3520 yards in 5 minutes, how far could he travel in 8 minutes at the same rate?1600 dollars is placed in an account with an annual interest rate of 5.25%. How much will be in the account after 25 years, to the nearest cent?You deposit 600 in an account. The account earns 45 simple interest in 2 years. What is the annual interest rate?