math
posted by sherkyra .
a clockmacker must wind his clocks on a regular schedule. he winds some of his clock every three days and the remainder of his clocks every five days. how often does he wind all of his clocks on the same day? I need help with that problem

What time span do you need?
1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31
1, 6, 11, 16, 21, 26, 31
If he winds them all on day 1, he'll wind them all again on day 16 and day 31. 
So he winds "some" of his clocks on day
3,6,9,12,15,18,...
He winds the remainder of the clocks on day
5,10,15,20,...
mmmh? 
thank you both so much. I feel positive about using this website again.

You're very welcome.
Respond to this Question
Similar Questions

Physics, relativity
I read this in a writeup of an experiment using atomic clocks: To reveal these effects, required the use of highly accurate atomic clocks, calibrated to check that they are perfectly in sync with each other – ticking down the nanoseconds … 
maths
how can i solve this question disney has 2 clocks.unfortunately both of them are faulty.1 of them loose 2 mintues every hour while the other gains during that time.he sets both of them correctly at midnight on 31 decemeber 2003 that … 
math
Bob sets two alarm clocks (batterypowered) to be sure he arises for his Monday 8:00 A.M. accounting exam. There is a 75 percent chance that either clock will wake Bob. (a) What is the probability that Bob will oversleep? 
algebra 2
In a shipment of alarm clocks, the probability that one alarm clock is defective is 0.04. Charlie selects three alarm clocks at random. If he puts each clock back with the rest of the shipment before selecting the next one, what is … 
math
1.) In a shipment of alarm clocks, the probability that one alarm clock is defective is 0.04. Charlie selects three alarm clocks at random. If he puts each clock back with the rest of the shipment before selecting the next one, what … 
Math
In a shipment of alarm clocks, the probability that one alarm clock is defective is 0.04. Charlie selects three alarm clocks at random. If he puts each clock back with the rest of the shipment before selecting the next one, what is … 
math
On Friday morning two clocks are correctly set at 6 a.m. One clock gains 1 minute every 2 hours. The other clock loses 1 minute every hour. When the real time is 10 p.m. that evening, the fast clock is ______ minutes ahead of the slow … 
math
Three clocks were set to ring at intervals as follows: the first after every 6 minutes the second after every 15 minutes the third after every 24 minutes if the clocks were set at the same time, after how many minutes did them ring … 
art
How does this art convey a message of time being lost? 
Math
Can you explain how to do this question? "Three clocks ring once at the same time. After that, the first clock rings after every 90 minutes, the second after every 30 minutes, and third after every 60 minutes. After how many minutes