The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or your kids can learn deal with Math Modeling, Problem Sum from Lower Primary School to Upper Primary School level. This posting is a primary school math question on Speed.

Read the posting on **Sarinâ€™s family took a train** about Sarinâ€™s family had their train ride from Singapore Tanjong Pagar Train Station.

Read the posting on**Â Sarinâ€™s family in Kluang **about Sarinâ€™s family venture in Kluang.

Read also the posting on **Sarin learns rate of change in school (Math Concept) **to learn about concept of Speed and Distance.

**Upper primary school mathematics question UPQ210**

Train KTM left Woodlands Station at 08 00 and travelled to Kluang Station at an average speed of 60 km/h. At the same time, Train KTM81 left Kluang Station for Woodlands Station. At 11 30, KTM15 and KTM81 were 85 km apart after passing each other earlier. If KTM15 arrived at Kluang Station at 13 00, at what time would the KTM81 arrive at Woodlands Station?

Solution:

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Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Train KTM15 reached Kluang Station at 1300, KTM15 travelled 5 hours

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Distance from Woodlands Station to Kluang Station = 60 Ã— 5 = 300km

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â From 11 30 to 13 00, KTM15 travelled 1.5 hours

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The distance travelled by KTM15 from 11 30 to 13 00 = 60 Ã— 1.5 = 90 km

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â From 08 00 to 11 30, the KTM81 travelled 3.5 hours

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The distance KTM81 travelled = 85 + 90 = 175km

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The speed of KTM81 = 175 Ã· 3.5 = 50 km/h

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The time required for KTM81 to travel 300km = 300 Ã· 50 = 6 hours

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The time that Train KTM81 arrived at Woodlands Station is 08 00 + 06 00 = 14 00Â Â Â Â Â Â Â

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