A truck traveling from New York to Baltimore is to be loaded with two types of cargo. Each crate of cargo A is 5 cubic feet in
volume, weighs 100 pounds, and earns $14 for the driver. Each crate of cargo B is 2 cubic feet in volume, weighs 250 pounds, and earns $9 for the driver. The truck can carry no more than 300 cubic feet of crates and no more than 10,000 pounds. Also, the number of crates of cargo B must be less than or equal to twice the number of crates of cargo A.
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A B Truck capacity
Volume
weight
Earning
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A B Truck capacity
Volume
weight
Earning
1 answer:
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Let the number of rows be = r
Let the number of seats per row be = s
we know that the number of seats is 126.
So, ..... (1)
As given, there are five more seats per row than the number of rows, so we can say that:
Putting this in equation (1)
r=-14 and r=9 (neglecting the negative value) we get r=9
And s=r+5
so, s =9+5=14
Hence, there are 5 rows and 14 seats per row.