The third grade mathematics volume II draws inferences from one another. What is the problem of jet lag?
The problem of difference and multiple is to know the difference between two numbers and the multiple relationship between them and find out the two numbers.
Formula: difference ÷ (multiple-1)= decimal; Decimal+difference or decimal × multiple = large number.
Example: Given X, Y, X-Y=8, X is three times that of Y, find X and Y. ..