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nico is saving money for his college education. He invests some money at 8%, and \$1400 less than thamount at 6%. The investments produced a total of \$210 interest in 1 yr. how much did he invest at...

an actor invests some money at 7%, and \$38000 more than three times the amount at 11%. The total annual interest earned from the investment is \$58980. How much did he invest at each amount? ...

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katy runs a dry cleaning business and needs 6% phosphoric acid solution to remove a stain from a suit. Katy has on hand 14% phosphoric acid solution and a 2% phosphoric acid solution. How many milliliters...

For 1993-1994, the average cost of tuition and fees at public four-year universities was \$2231 for full-time in-state students. Twenty years later, it had increased 320%. To the nearest dollar,...

Baseballs are going on sale next week for \$8 each. Mario plans to buy 3 baseballs. He figures he will save a total of \$6 if he waits to buy the balls on sale. What is the regular price of a baseball...

A riverfront boat storage area is rectangular with fencing an all sides except the side along the river. If 550 m of fencing is used and the side along the river is 50 m shorter than the two longer...

A hummingbird needs 10 grams of sugar and 8 grams of protein each day. One honeysuckle flower provides 20 mg of sugar and 10 mg of protein. One nasturtium flower provides 10 mg of sugar and 10 mg...

A courier travels to and from a manufacturing plant in 7 h. His average speed to the plant is 80 km/h, and the return trip averages 20 km/h slower. How long did it take to reach the plant?

an old machine that folds and seals milk cartons can produce 50 cartons per minute. a new machine can produce 70 per minute. The old machiene has made 1000 milk cartons when the new machiene is turned...

your draining a swimming pool at the rate of 4 gallons per second. ten minutes after you start draining, there are 6,893 gallons of water left in the pool. what is the equation taht represents this...

My question is for my sister who is a fifth grader. She cannot figure it out and I do not have the time.

A riverfront boat storage area is rectangular with fencing an all sides except the side along the river. If 550 m of fencing is used and the side along the river is 50 m shorter than the two longer...