Mary and Henry shared a collection of stamps. Mary had 7/10 of the total number of stamps. If Mary gave 38 stamps to Henry, she will have thrice the number of stamps Henry have. How many stamps did Mary have?
By the way, we cannot use algebra to solve this question.
This is the entire question, because this is a primary school(5th Grade) question in Singapore, we can't use algebra to solve since they haven't learnt it.