What is the reciprocal of 18/7?

a 8/17
b 17/8
c 7/18
d 18/1

What is the value of x in the diagram below?

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

How to solve a simultaneous equation involved with fractions?