ok here goes nothing....During a promotion, a music store gives a free CD to every fifteenth customer and a free DVD t oevery fortieth cutomer. Which customer well be the first to get both gifts? HELP!!!!!
2007-11-30 21:12:11 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
thnks to u guys who answered without having an attitude! ♥ :^D
2007-11-30 21:40:38 · update #1
lol! i have anoder one! ok
Eithen, Michelle and Kam volunteer at the swinning pool. Eithen works every 5 days. Michelle works every 6 days. Kam works every 15 days. They are working together today. How many days well it ne untill the next time they work together? i am sorry for the Q's...but i atleast i put used to Yahoo answers! lol! thnks! :^D ♥
2007-11-30 21:46:08 · update #2
120th.
The second one is 30. Do you not know how to work these out? Just find the lowest number which they are all factors of.
EDIT: Haha, it's funny how people keep answering when the correct answer has been given at least 4 times.
2007-11-30 21:15:44 · answer #1 · answered by Jethro 5 · 0⤊ 0⤋
The 120th Customer
Custumer 15, 30, 45, 60, 75, 90. 105 and 120 will get CD
Customer 40, 80 and 120 will get DVD
2007-11-30 21:26:40 · answer #2 · answered by Jaco W 3 · 0⤊ 0⤋
the customer should be both a 15th and 40th customer.
the 15th and 40th counts should occur some number of times before the customer comes.
the actual number of the customer should be a multiple of both 15 and 40.
since he is the first such customer it should be the L.C.M of 15 and 40, which is 120.
2007-11-30 21:26:17 · answer #3 · answered by Bhaskar 4 · 0⤊ 0⤋
get the least common multiple of 15 and 40 either by continuous division of listing method:
15= 15,30,45,60...120
40 = 40,80,120
The 120th customer will be the first to get both gifts.
2007-11-30 21:16:59 · answer #4 · answered by jamesyoy02 6 · 0⤊ 0⤋
120
2007-11-30 21:18:51 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The 120th customer.
2007-11-30 21:16:20 · answer #6 · answered by Jeanne R 7 · 0⤊ 0⤋
120th or 50th
2007-11-30 21:24:28 · answer #7 · answered by SK@TER 3 · 0⤊ 0⤋
the 30th day after today... i.e. 30th Dec.
2007-11-30 21:50:05 · answer #8 · answered by sant_kulk 2 · 0⤊ 0⤋