Question

the diameter of q small gear is 16 cm. This is 2.5 cm more than 0.25 of the diameter of a larger gear. What is the diameter of the larger gear?

Answer 1

If x is the diameter of a larger gear,  then 0.25x+2.5=16
0.25x=16-2.5
0.25x=13.5
x=54
Answer: the diameter of a larger gear is 54 cm