Adrian Ng
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Making it visual...

Replies 0

Jason Khng
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Pls help

Replies 4
Xavier Sng

(a) Derrick's head start = 20/60 hour × 10 km/h = 10/3 km John had a speed advantage of 2 km/h, so the time needed for John to make up 10/3 km = 10/3 km ÷ 2 km/h = 5/3 hours or 1 hour 40 min That would be the time John needed to reach the midway between point A and point B. Since Derrick would take 2 hours to reach the midway point, the distance required for Derrick to cycle the whole journey = 2 x 2h × 10 km/h = 40 km (ans) (b) John needed 2 × 5/3 hours = 3 hours 20 min Since John started at 1150, he would reach his destination at 1510. (ans)

6 years ago
Jason Khng

Xavier thank you. But the last part John start 20mins later than Derrick. So the starting time should be 1150 and ending time 1510. Thank you

6 years ago
Xavier Sng

Thank you Jason. You are indeed correct and I have ammended accordingly.

6 years ago
Jason Khng

No problem. We learn from each other.

6 years ago

Dephnie Won
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Pls help...thanks in advance

Replies 4
Ah Keh Wei Sze

4 kettles = 10 jugs 12 + 10 = 22 jugs 1 jug --> 17.6l / 22 = 0.8l = 800ml

6 years ago
Jacqueline Heng-Tay

1 kettle = 2.5 jugs 12 jugs + 4 kettles = 22 jugs 17.6 L = 17 600 ml Capacity of a jug = 17600/22 ml = 800 ml

6 years ago
Xavier Sng

4 kettles have the same capacity as 10 jugs. 12 jugs and 4 kettles thus have the same capacity as 22 jugs. 17600 ml divided by 22 = 800 ml (ans)

6 years ago
Dephnie Won

Ok got it. Thanks to Ah Keh Wei Sze, Jacqueline Heng-Tay and Xavier Sng

6 years ago

Catherine Wang
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Help needed!!

Replies 3
Xavier Sng

The areas of triangle STU and triangle WTU are the same since they share the same base length and the same perpendicular height. Area of triangle WVU = 89 - 14 = 75 sq cm

6 years ago
Catherine Wang

Thank you!

6 years ago
Xavier Sng

Happy to help. Regards

6 years ago

Irene Kong
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Pls help me this two questions?

Replies 3
Jason Khng

6 years ago
Irene Kong

Jason khng thank for your help.

6 years ago
Jason Khng

Welcome

6 years ago

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