mandy gets her hair cut every 4 weeks and eric gets his hair cut every 5 weeks and nick gets his every 7 weeks. If they all got their hair cut on the same day, when will they get their har cut on the same day again (in weeks)?
2006-10-03 13:07:17 · 11 answers · asked by killy 2 in Science & Mathematics ➔ Mathematics
You want the LCM of 4, 5, and 7 which is 140 weeks!
2006-10-03 13:10:16 · answer #1 · answered by MollyMAM 6 · 3⤊ 0⤋
Start with 4 X 5 X 7 = 140 weeks
2006-10-03 20:12:57 · answer #2 · answered by Anonymous · 2⤊ 0⤋
It would be 140 weeks later because that is the next time that all three numbers equal a common number.
2006-10-03 20:12:14 · answer #3 · answered by synjin21 1 · 2⤊ 0⤋
20 weeks
2006-10-03 20:17:14 · answer #4 · answered by Devin 2 · 0⤊ 2⤋
Ans:- N+1 week.
Here 'N' stands for the 1 week before hair cut.!
2006-10-03 20:10:53 · answer #5 · answered by SHAMSHIL K 2 · 0⤊ 3⤋
mollymam is precisely correct.140 weeks.LCM or whatever it is. i don't know its English.I didn't take maths in English.I only can say that minimum common multiplying of those three numbers.( a simple primary school question.)
2006-10-03 20:17:47 · answer #6 · answered by system_founder 1 · 2⤊ 0⤋
12 weeks
2006-10-03 20:08:58 · answer #7 · answered by hey dude 3 · 0⤊ 3⤋
just get out a calender and mark the weeks until they meet.
2006-10-03 20:15:45 · answer #8 · answered by #!@#^$*#($ 5 · 0⤊ 0⤋
140th week
all can divide into 140
2006-10-03 20:16:42 · answer #9 · answered by King J 1 · 1⤊ 0⤋
umm i dont know . ask ur math teacher or ur teacher or a friend whos really good at math or someone whose really good at math.
2006-10-03 20:10:09 · answer #10 · answered by curiousgirl 2 · 0⤊ 2⤋