a mechanical toy on a circular track goes foward 3in. then back 2in. how many moves does the toy take to complete one 15in. revolution?
i got 15 moves but i just want to make sure i did it right.
No, 25 is the answer. After 24 forward and back pairs (which count as two moves per pair), the toy has moved 12 inches. In the next forward motion it gets to 15 inches.
15
To find the number of moves it takes for the toy to complete one 15-inch revolution, we need to consider the distance covered by each individual forward and backward motion of the toy.
In this case, the toy moves forward 3 inches and then back 2 inches. This means that each move consists of covering a total distance of 5 inches (3 inches forward + 2 inches backward).
To complete one 15-inch revolution, we need to divide the total distance (15 inches) by the distance covered in each move (5 inches).
So, 15 inches รท 5 inches = 3 moves.
Therefore, it will take the toy 3 moves to complete one 15-inch revolution on the circular track.