Question:

Level 3

There were some staircase with the same amount of steps. For the 1st staircase, Carl walked up some steps and ran up 7 steps. He took 98 seconds. For the next staircase, he ran up 15 steps and walked the rest of the steps, and took a total of 58 seconds. How long would Carl take to walk up 4 staircase of the same number of steps? Express the answer in minutes and seconds.

4 m
There were some staircase with the same amount of steps. For the 1st staircase, Carl walked up some steps and ran up 7 steps. He took 98 seconds. For the next staircase, he ran up 15 steps and walked the rest of the steps, and took a total of 58 seconds. How long would Carl take to walk up 4 staircase of the same number of steps? Express the answer in minutes and seconds.

Level 2

A race car travelled^{2}_{5} of its journey at an average speed of 64 km/h. Find its average speed for the remaining 480 km if its average speed for the whole journey was 80 km/h.

2 m
A race car travelled

Level 2

An airplane flew 9000 km from Country X to Country Y at a speed of 450 km/h. It then covered 4900 km from Country Y to Country Z at a speed of 350 km/h. Find the time taken for the whole journey.

2 m
An airplane flew 9000 km from Country X to Country Y at a speed of 450 km/h. It then covered 4900 km from Country Y to Country Z at a speed of 350 km/h. Find the time taken for the whole journey.

Level 2

A motorist travelled^{2}_{3} of his journey at an average speed of 80 km/h and completed the remaining 240 km in 4 h. What was the total time taken for the whole journey?

2 m
A motorist travelled

Level 2

A motorcycle rider travelled^{4}_{5} of his journey at an average speed of 20 km/h and completed the remaining 60 km in 2 hours 45 minutes. How long did he take to complete his journey?

2 m
A motorcycle rider travelled

Level 3

Sam took 2 hours to walk from Building A to Building B which was 6 km away. On his way back from Building B to Building A, he increased his average walking speed by 1 km/h. How long did he take for his journey back?

3 m
Sam took 2 hours to walk from Building A to Building B which was 6 km away. On his way back from Building B to Building A, he increased his average walking speed by 1 km/h. How long did he take for his journey back?

Level 2

Kim ran 30 minutes at the speed of 10 km/h. She then continued at the speed of 8 km/h for 45 minutes. How far did she run?

2 m
Kim ran 30 minutes at the speed of 10 km/h. She then continued at the speed of 8 km/h for 45 minutes. How far did she run?

Level 2

Ana and Tom started driving from the same place towards Cypress Tower at average speeds of 56 km/h and 80 km/h respectively. After some time, they were 80 km apart. How long had they been travelling?

2 m
Ana and Tom started driving from the same place towards Cypress Tower at average speeds of 56 km/h and 80 km/h respectively. After some time, they were 80 km apart. How long had they been travelling?

Level 2

Tania and Christian started off together from the park at the same time and drove towards the office at speeds of 87 km/h and 81 km/h respectively. How far apart would they be after 1 hour 20 minutes?

2 m
Tania and Christian started off together from the park at the same time and drove towards the office at speeds of 87 km/h and 81 km/h respectively. How far apart would they be after 1 hour 20 minutes?

Level 2

Martin and Ervin started together from the same bus-stop and ran along a track at the speed of 11 km/h and 7 km/h respectively. How far apart would they be in 15 minutes? Express the answer in km.

2 m
Martin and Ervin started together from the same bus-stop and ran along a track at the speed of 11 km/h and 7 km/h respectively. How far apart would they be in 15 minutes? Express the answer in km.