The answer i would pick is 2
It would be 1/3rd because your last number would be 4 in the equation of 12 sandwiches.
If by description you mean simplification then: 84x/28
So you know the merchant made a 15% profit on the pen, so she bought it for a cheaper price. To find the cost of the pen before you have to take the price now, $6.90 and times it by 85%. You do 85% because you subtract the 15% she saved from 100% and you get 85%. So 6.90x.85= 5.865 which rounds to $5.87
9r
Explanation:
4r + 9r = 13r
13r-11r = 2r
2r + 7r = 9r
