Sarah went to the candy store to buy treats for her halloween party. she came out with 11 pounds of candy. she bought m& m's for $2/lb and raisinets for $1.50/lb. she spent $19 altogether, how many pounds of each type of candy did she get?

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?