A rectangular box has a base measuring a by a meters and height of b meters. Which of the following represents the surface area of the box?

If 20% of a number is 35, what is 50% of that number?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

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