Sam can mow a lawn in 40 minutes. Melissa can mow the same lawn in 60 minutes. How long does it take for both Sam and Melissa to mow the lawn if they are working together? Express your answer as a reduced fraction.

A large candy bar was 127 calories. The smaller candy bar has 25 percent less calories. How many calories does the smaller candy bar have?

What value of X satisfies the equation 4x+0.2=3

Use the distributive property to multiply - 3 (-2 3/10)

Elise is selling coupon cards as a fundraising project for her soccer team. For each coupon card she sells, she earns $4 for the team. The graph below displays the relationship between cards sold, x, and money earned, y.

The number 29.6 is what percent of 74 ?

Susan bought 1 kilogram bag of grapes

Rob bought one jar of sun-dried tomatoes for $4. How many jars can Mofor buy if he has $8?

What is 20.35 divided by 3 in the standard algorithm

A stadium must have 10 attendants at the stadium parking lot and two each at the satellite lots. each attendant makes $10/hour.

Dixon and his little sister Ariadne stand next to each other on the playground on a sunny afternoon. Their mother measured their shadows. Dixon's shadow is 18 feet long and is 18 feet long and ariadne's shadow is 15 feet long.