A textbook store sold a combined total of 304 biology and psychology textbooks in a week. The number of biology textbooks sold was three times the number of psychology textbooks sold. How...

A textbook store sold a combined total of 304 biology and psychology textbooks in a week. The number of biology textbooks sold was three times the number of psychology textbooks sold. How...

It is estimated that to complete an excavation would take 2 days using 4 bulldozers and 3 steam shovels, and 3 days using 5 bulldozers and 1 steam shovel. How many days would one bulldozer and one...

Susan is twice as old as her brother. Five years ago Susan was 3 times as old as her brother. Find her age.

A financial planner wants to invest $8000, some in stocks earning 15% annually and the rest in bonds earning 6% annually. How much should be invested at each rate to get a return of $930 annually...

Kerry asked a bank teller to cash a $390 check using $20 bills and $50 bills. If the teller gave her a total of 15 bills, how many of each type of bill did she receive?

At a college bookstore, Carla purchased a math textbook and a novel that cost a total of $54, not including tax. If the price of the math textbook is $8 more than 3 times the price of the novel, what...

For each ordered pair, determine whether it is a solution to =−7x5y−3 . , xy Is it a solution?YesNo , 3−3 , −4−5 , 06 , 12

Which is the point of intersection. Explain how you know. A (3,5) B(3,3) C(2,4) D(4,2)

a commissionaire removed 76 coins, consisting of loonies and quarters, from a parking meter. If the value of the coins was $37.75, how many coins of each were removed?

Hanna borrowed $250from her parents to buy a new bike. She plans to pay back the money she borrowed by giving her parents each week $15 from the money she makes after school.

This problem confuses me because at the bottom of the problem they have a model of a triangle. The triangle is split in half. There is a dotted line down the middle labeled 4. The outside (longest)...

x-3y=1 3x-5y=11 Please explain how you got your answer. Thanks!

Juliana, Rex, and Bobby work at the local Walmart selling newspapers and coupon books. One day, 3 of them had a combine sales total of $1480. Juliana sold $120 more than Rex. Rex and Bobby sold $280...

At the bottom of the question there is a model. It is a rectangle. The width is x+5 and the length is 15.

The set up at the bottom is "infielder outs plus outfielder outs equals total outs." how many of the outs were Made by infielders and how many were made by outfielders?

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 70% salt and Solution B is 95% salt. She wants...

Premium gasoline sells for 78.9 cents/litre. Regular gasoline sells for 71.9 cents/litre. To boost sales, a middle octane gasoline is formed by mixing premium and regular. If 1000 litres of this middle...

how much 35% blend should he mix with the 20% blend to create a 12 oz cup of cafe au lait containing 30% steamed milk

The local apothecary is selling rocks and bags of lint to anyone foolish enough to purchase them. Lloyd bought 5 rocks and 6 bags of lint for $190. Harry bought 6 rocks and 8 bags of lint for $244...

At the bottom the give a set up that reads "number of regular pop plus number of diet pop equals total number of bottles". But I do not know how to put the set up with the numbers...