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primary 6 | Maths | Speed
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Cindy
Cindy

primary 6 chevron_right Maths chevron_right Speed chevron_right Singapore

Kindly help. Thank you

Date Posted: 2 years ago
Views: 544
AC Lim
AC Lim
2 years ago
From 10:00am to 11:00am, Laura has travelled = 81 × 1 = 81 km
Left = 221 - 81 = 140km.

When Laura and Mandy meet, total distance traveled by both = 140km
Total speed by both = 81+94 = 175
Time taken = 140÷175 = 0.8 he

Laura travel in 0.8 hr
Distance = 81×0.8 = 64.8km

Total distance travel by Laura when meet Mandy = 81 + 64.8 = 145.8km.
Cindy
Cindy
2 years ago
Thank you
sstrike
Sstrike
2 years ago
https://ask.manytutors.com/questions/107426

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AC Lim
Ac Lim's answer
12074 answers (A Helpful Person)
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sstrike
Sstrike's answer
5318 answers (A Helpful Person)
1100 - 1000 = 1 hr

- ratio method
- model method