The perimeter of a rectangle sandpit is 40 meters. The length of the sandpit is 1 meter less than twice it’s width. What are the
1 answer:
Answer:
The width is 7 meters and the length is 13 meters
Step-by-step explanation:
The perimeter of a rectangle sandpit is 40 meters.
Let the width be w units, then the length which is 1 meter less than twice it’s width becomes:
The perimeter of a rectangle is given by:
We substitute P=40 and the length in term of w to get:
We simplify to get:
Divide through by 2 to get:
Hence
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now to figure out the other stuff... we have to represent the greatest amount of everything that is left, and we have 3s and 7s left over, so we need to figure out how many of each we need.
one has one 3 and one has two, so we need two threes. now our equation is
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how many sevens does 60 have? 0, and 630 has 1, so we know we need one 7. our answer becomes