Select ALL of the restrictions:
Multiply. Do not include the restrictions.
Divide. Do not include the restrictions.
Add. Do not include the restrictions.
Solve the equation. Be sure to check your solutions against the restricted values.
Solve the equation. Be sure to check your solutions against the restricted values.
Subtract. Do not include the restrictions.
Erin can paint a room in 5 hours. Her friend can paint a room in 7 hours. If they work together, how long will it take them to paint a room? Round to the nearest whole.
Robert and his friend are making 20 posters for the basketball game. Robert can make 1 poster every 12 minutes, and his friend can make 1 poster every 9 minutes. How long will it take them to make all 20 posters if they work together? Round to the nearest whole.
Find the Least Common Denominator for: