How many more people studied for 0-30 minutes than people who studied for 121-150 minutes?

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

If 25% of y is 30, what is 60% of y?

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest