Sajjad1994 wrote:
When Truck A travels at a constant speed of m miles per hour for 84 minutes, and Minivan B travels at a constant speed of n miles per hour for 252 minutes, Truck A travels 14 miles more than minivan B.
In the table, select values of m and n that are consistent with the information given. In the first column, select the row that corresponds to the value of m, and in the second column select the row that corresponds to the value of n. Select only one option in each column.
Truck A travels at m mph for 84 minutes => distance covered by Truck A= \frac{m*84}{60}
Similarly Minivan B travels at n mph for 252 minutes => distance travelled by B = \frac{n*252}{60}
As per the question Truck A travels 14 miles more than B:
\frac{m*84}{60}-\frac{n*252}{60}=14
Simplifying the equation we will get
m-3*n=10
From the options if we take
m=64 and n=18 => then only m-3*n=10 equation is satisfied.