Problema Solution
a farmer bought 85 kg of fertilizer in 12 bags.some are 5 kg. the rest are 10 kg bags. how man 5 kg bags did he buy?
Answer provided by our tutors
let number of 5 kg bags = x
then number of 10 kg bags = 12-x
total kg = 85 kgs
therefore 5x+10(12-x) = 85
5x+120-10x = 85
ie x = 7 bags