3. The product of three natural numbers is 13600. Calculate the product of the first and second number if the product of the first and third number is 544, and the product of the second and third is 425.
First method:

If we divide the product of all three numbers by the product of the first and third numbers, we get the second number.

The second number is $13600: 544=25$.

2 POINTS

If we divide the product of all three numbers by the product of the second and third numbers, we get the first number.

The first number is $13600: 425=32$.

2 POINTS

The desired product of the first and second numbers is $32 \cdot 25=800$.

2 POINTS

TOTAL 6 POINTS