Question

Andrew collected 1900 local stamps and 340 foreign stamps. After he received an equal number of local and foreign stamps from his brother, the number of local stamps was 3 times the number of foreign stamps. How many foreign stamps did he receive from his brother?

Answer 1

1,900 + x = 3(340 + x)

1,900 + x = 1,020 + 3x

2x = 880

x = 440

Andrew received 440 foreign stamps and 440 local stamps from his brother.