Rates and Averages

Two trains leave at the same time in opposite directions. The CheeChee Train is traveling at 200 feet/second while the ChewChew Train is traveling at 350 feet/second. How many seconds will elapse before the trains are 165000 feet apart?

Answer explanation

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CCSS.7.EE.B.4A

A total of $16,000 was invested at annual interest rates of 4% and 7%. If the return was $940, how much was invested in the 4% account?

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CCSS.8.EE.C.8C

A total of $16,000 was invested at annual interest rates of 4% and 7%. If the return was $940, how much was invested in the 7% account?

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CCSS.8.EE.C.8C

A total of $9,000 was invested at annual interest rates of 3% and 4%. If the return was $350, how much was invested in the 3% account?

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CCSS.8.EE.C.8C

A total of $9,000 was invested at annual interest rates of 3% and 4%. If the return was $350, how much was invested in the 4% account?

Answer explanation

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CCSS.8.EE.C.8C

Mr. Geering takes his jetpack for a spin at a speed of 120 mph. 3 hours later, Ms. Morreale puts her Josh Allen jetpack on and cruises at 170 mph. How long before Ms. Morreale catches up to Mr. Geering? Enter just the number.

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CCSS.8.EE.C.7B

Professor Plum invested a sum of money into an account with a 7% return and a second sum that was $1200 less than the first with a 4% return. The annual return is $865 from both investments. How much was invested in the 4% account?

Answer explanation

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CCSS.8.EE.C.8C

Geraldine invested a sum of money into an account with a 5% return and a second sum that was $700 more than the first with a 9% return. The annual return is $532 from both investments. How much was invested in the 5% account?

Answer explanation

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CCSS.8.EE.C.8C

Pongo invested a sum of money at 6% and three times as much in an account that returns 4%. The total annual return was $657. How much was invested in each rate? Enter your answer as an ordered pair: (x,y)

Answer explanation

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CCSS.8.EE.C.8C

Ironman flew from his house to Stark Tower and back. He took 4 hours longer to get back due to... traffic. The average speed there was 120 mph and on the way back was 72 mph. How many hours did the trip there take?

Answer explanation

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CCSS.HSA.CED.A.1