if there are 45 pieces of fruit and there are twice as many bananas as there are apples. How many of each kind of fruit are there?

Answer 1

a = apples
b = bananas = 2a

a + 2 a = 45

3 a = 45
a = 15
b = 2 a = 30

Answer 2

x + 2x = 45

3x = 45

x = 15

15 apples
30 bananas