A Guy named Tony gets a job at a local recreational center that specializes in Children Whose Parents Don't Give Them Gifts. The center’s director asks Tony to take the company credit card and purchase gifts for the children’s upcoming party.
The center has 100 children, and some of the children already have gifts from previous parties. 85 of the kids have a doll, 75 have a ball, 70 have a hat, and 80 have a toy truck.
QUESTION: What is the least possible number of kids who own all four of the toys (doll, ball, hat, and toy truck)?
2006-06-13 10:35:39 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
10.
15 don't have a doll, 25 no ball, 30 no hat, and 20 no truck. Add all of those up and you get 90, so at least 10 must have all four.
RIGHT! Good job
TheOnlyBeldin
2006-06-13 13:33:16 · update #1
10. 15 don't have a doll, 25 no ball, 30 no hat, and 20 no truck. Add all of those up and you get 90, so at least 10 must have all four.
2006-06-13 10:38:16 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 1⤋
I guess i would solve ikt successively:
at least 85 kids have a doll
at least 75-(100-85) = 60 kids have a doll and a ball
at least 70-(100-60) = 30 kids have a doll and a ball and a hat
at least 80-(100-30) = 10 kids have all four toys.
2006-06-13 17:42:32 · answer #2 · answered by Tichy 3 · 0⤊ 0⤋
70
2006-06-13 17:41:27 · answer #3 · answered by Sander 4 · 0⤊ 0⤋
70
2006-06-13 17:41:22 · answer #4 · answered by timothy m 1 · 0⤊ 0⤋
70 kids -------------------------------------------------------------------------------------------- and if this is a trick question none cuz their parents dont give them gifts!!!
2006-06-13 17:45:52 · answer #5 · answered by ? 1 · 0⤊ 0⤋