Convert 7.5times 10^3ml to liters

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters