Answer:
The speed of the truck is 1,200 miles.
Step-by-step explanation:
Car = 10 MILES PER HOUT FASTER THAN THE TRUCK.
Truck = X times 10
X = 120 MILES times 10
120 times 10= 1,200, BECAUSE IF YOU TAKE THE "1" FROM "10" IT'LL BE "1" FROM THE 10, TIMES 120 MILES WHICH = 120. NOW TAKE THE "0" FROM THE 10 AND ADD *0* AT THE END OF THE ANSWER YOU GOT WHICH WAS "120." THEN YOUR ANSWER WILL BE 1,200 IF YOU ADD THE "0" AT THE END.
*and also useable on a calculator depending on your grade level*
