Construction 7337

A smaller car would bring 40 times the material needed for construction, and a larger car 30 times. When the first and second cars had made 12 trips, the smaller car was recalled, and the larger one was to bring the remaining material. How many more roads does the bigger car have to cover?

Correct answer:

v =  9

Step-by-step explanation:

12/40+12/30+v/30=1  4v=36  v=436=9  v=9



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