A cyclist rode from town A to Town B at 12 mph and then returned at half the speed. If the entire trip took 18 hrs, find the time it took for him on the return trip.

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Twelve less than a number is at most 20

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.