At a factory, Taj produces 23 toys per hour and Rosa produces 47 toys per hour. How many hours will it take for
Taj and Rosa to produce 490 toys?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Which of the following is not a subset of {1,2,3}?

1: 4 if the wew 35 surfboards at the beach how many were short boards?