How do you solve this?, check how fast and accurate you are

SOLUTION
IF 3 PINEAPPLES IS 12, THAT IS EACH OF THE PINEAPPLE IS 4,
4X3=12
1 ORANGE + 1 PINEAPPLE = 14
1 ORANGE – 1 WATERMELON = 3
THEN 1 WATER MELON + 1 ORANGE+1 PINEAPPLE IS
7+ 10+4= 21
ANSWER IS 21
SHARE WITH FAMILY