Question

Shilpa has two planks of wood. One of them is 15 m less than 4 times the length of the other one. The two planks put together are 20 metres long. What is the length (in metres) of the shorter plank?

Answer 1

Answer:

Length of shortest plank=  7 m

Step-by-step explanation:

Length of shortest plank= l

Length of the longest plank= 4l-15

Total length= 20

4l-15+l=20

5l-15=20

5l=20+15

5l= 35

l=35/5

l=7 m

Length of shortest plank= l= 7 m

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Answer 2

Answer:

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Step-by-step explanation:

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