You have six baskets with apples - 10,12,15,20,22,25 (this is how many apples there were in them - 10 in first, 12 in second..).
Some of the apples are red and some are green. After one basket was lost there were twice more red apples than green apples.
How many apples were there in the basket which was lost?
--This was in one of math tests I did and I would love to know how to solve it..