A car priced at £11 000 decreases in value at a rate of 10% per year. A van priced at £12 400 decreases in value at a rate of 15% per yea.
a) Find the cost of the car after one year. = £9900
b) Find the cost of the van after one year. = 10 540
c) Which cost more after one year? By how much. = The van, by £640
--- I already know the answers, but i need explanation . show me your working out. or else your answer is useless and no help so plz show me ur working out---

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

two data sets with the same median will not have the same varaibility

step-by-step explanation:

i think the length is 12 and the width is 17