Between 1st January 2010 and 1st January 2015, the price of 1 tonne of copper decreased by 20%
This was a decrease of $1320
Work out the price of 1 tonne of copper on 1st January 2010.​

Can't gugys answer the ratio question. this is urgent the plans of a building is drawn toward scale of 1: 1000. kfc the foyer on the plans measures 62mm by 54mm, how large is the foyer in real life?

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?