Aski shop owner surveys 200 people who ski or snowboard. if 196 people ski and 154 people do both activities, how many people snowboard?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?