You are Here: Home >< Maths

# Maths Homework HELP!

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
1. Bus A stops every 12 minutes and Bus B stops every 9 minutes on the same circuit. They stop at the same bus stop at 9:15am. When is the next time this happens? Thanks.
I'm sorry if this is easy, but I don't know how to do this... I got 9:51, but is there any better way to do it than counting up till the number matches?
2. (Original post by sweetstars)
Bus A stops every 12 minutes and Bus B stops every 9 minutes on the same circuit. They stop at the same bus stop at 9:15am. When is the next time this happens? Thanks.
I'm sorry if this is easy, but I don't know how to do this... I got 9:51, but is there any better way to do it than counting up till the number matches?
It would be the LCM of 9 and 12 which is 36 since this is the lowest number that can be obtained by both using an integer multiple. so, the time is 9:15 + 36mins ---> 9:51
3. (Original post by sweetstars)
Bus A stops every 12 minutes and Bus B stops every 9 minutes on the same circuit. They stop at the same bus stop at 9:15am. When is the next time this happens? Thanks.
I'm sorry if this is easy, but I don't know how to do this... I got 9:51, but is there any better way to do it than counting up till the number matches?
i think your answer is right bcoz u find the LCM of 9 and 12 (which is 36) and add that to the original time. This gives u 9:51
4. (Original post by 123Master321)
It would be the LCM of 9 and 12 which is 36 since this is the lowest number that can be obtained by both using an integer multiple. so, the time is 9:15 + 36mins ---> 9:51
Thank you so much! XD I was so confused as to how my LCM and HCF homework had anything to do with this word problem.
5. (Original post by DD2508)
i think your answer is right bcoz u find the LCM of 9 and 12 (which is 36) and add that to the original time. This gives u 9:51
Thank you so much! I had to use a lot of Tippex from all my thinking and mistakes I made from not knowing the answer. XD

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register

Updated: October 14, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

## Make your revision easier

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.