What is the markup percent of $50 to $55

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

Can someone me out here and the tell me the greatest common factor

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?