Bill had $21 to spend on four avocados.

After buying them he had $13. How

much did each avocado cost?

Jennifer's grandmother buys carrots at the farm stand. She and her 3 grandchildren equally share the carrots. The total weight of the carrots is 28 kg. How many kg of carrots will Jennifer get?

Urn I contains 2 red balls and 2 white balls. Urn II contains 13 white balls. A ball is selected at random from urn I and placed in urn II. Then a ball is selected at random from urn II. What is the probability that the second ball is white?

A microwave oven is on sale for 20% off the original price of $79.50. find the sale price.

Gilbert bought 8 2/5 ounces of walnuts. The next day, he used 5 4/5 ounces of them in a recipe. How much is left?

Find the quotient 3/18 divided by 7/21

How can you use models to explain why 3.1=3.10?

Scientific notation for 82,300,000

Factor completely 12y+6

The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as measured from the planet's surface).

6. At a firefighters' pancake breakfast, the firefighters served 345 people and raised $1395. If the cost of a, an adult's ticket to the pancake breakfast, was $5 and the cost of c, a child's ticket, was $3, what was the number of adult tickets sold?