## Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.

### See 2 Answers

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W

dist. : 5d

time: t

speed: v

time t = 5d/v

Sam

dist. : 9d

time: t

speed: v+100

time t = 9d/(v+100)

at the same time t,

5d/v = 9d/(v+100)

5/v = 9/(v+100)

5v+500 = 9v

v = 125

Weili's speed is 125 m/min

...

dist. : 5d

time: t

speed: v

time t = 5d/v

Sam

dist. : 9d

time: t

speed: v+100

time t = 9d/(v+100)

at the same time t,

5d/v = 9d/(v+100)

5/v = 9/(v+100)

5v+500 = 9v

v = 125

Weili's speed is 125 m/min

...

Date Posted:
5 months ago

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*clear*{{ downvoteCount * -1 }} Downvotes

Hope this helps!

Date Posted:
5 months ago

Thanks alot