Frankie buys some stamps. She spends £11.70 on 20p and 50p stamps. She buys twice as many 20p stamps than 50p stamps. How many 20p stamps does Frankie have?

Sum is 17 and their difference is 3

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.