If it takes 42 minutes to load 312 trucks, how many minutes will it take to load 612 trucks?

Question

karton · Accepted Answer

We know that it takes 42m to load 312 trucks. We want to find out how long it takes to load 612 trucks. Too bad it was not the time wanted to load 7 trucks, because: 7 trucks =2(312) trucks so the answer would be: 2(42m)=84m for 7 trucks. The reason we should bother with this answer is because: Now we have an estimate for the real answer we will need to find (must be slightly less than 84m). We could find the time it takes to load 1 truck by dividing the time (42m) by 312 and 312=6+12=72 42m72=42×27=84m7=12m→ after invert and multiply. Then we could multiply the time to load 1 truck by 612 as asked: 12m×612=72m+12(12m)=72m+6m=78m And that is in line with our estimate of 84m calculated previously.

user_27qwe · Accepted Answer

Explanation: The more trucks, the more minutes. 42x=3.56.5→x=42⋅6535=6⋅13

nick1337 · Accepted Answer

Given that 42 minutes are required to load 312 trucks. Let ‘x minutes’ be the time to load 612 trucks. 312 trucks → 42 minutes 612trucks →x By cross multiplication 312×x=612×42x=(612×42)/312=(132×42)72x=78 Thus x=78 minutes

If it takes 42 minutes to load 3\frac12 trucks, how

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