Let’s solve this step by step.
We have 5 bikes lined up one behind the other.
Each bike is
2 meters long.
Between each pair of bikes, there is a
1 meter gap.
First, let’s figure out how many gaps there are.
If you line up 5 bikes:
Bike – Gap – Bike – Gap – Bike – Gap – Bike – Gap – Bike
Count the gaps: between bike 1 & 2, 2 & 3, 3 & 4, 4 & 5 → that’s
4 gaps.
Now calculate total length from bikes:
5 bikes × 2 m =
10 meters
Now calculate total length from gaps:
4 gaps × 1 m =
4 meters
Add them together:
10 m + 4 m =
14 meters
✔ So the whole line of bikes is 14 meters long.
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Now for the follow-up problem:
> Suppose another three children on bikes joined the line.
> How long would the line of bikes be now?
Originally we had 5 bikes. Now we add 3 more → total bikes = 5 + 3 =
8 bikes
How many gaps now?
With 8 bikes in a line, there are gaps between each pair → so 8 - 1 =
7 gaps
Length from bikes:
8 bikes × 2 m =
16 meters
Length from gaps:
7 gaps × 1 m =
7 meters
Total length:
16 m + 7 m =
23 meters
Final Answer:
23
Parent Tip: Review the logic above to help your child master the concept of problem solving maths worksheet.
