It takes some bricklayers 28 hours to build a 168 m wall.How long will it take them to build a 42 m wall?
Question
It takes some bricklayers 28 hours to build a 168 m wall.How long will it take them to build a 42 m wall?
Solution
To solve this problem, we need to find out how long it takes to build 1 meter of the wall first.
Step 1: Divide the total time by the length of the wall to find the time per meter. 28 hours / 168 meters = 0.1667 hours/meter
Step 2: Multiply the time per meter by the length of the new wall. 0.1667 hours/meter * 42 meters = 7 hours
So, it will take them 7 hours to build a 42 meter wall.
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