To start, let's convert 3.75 tons into pounds. There are 2000 pounds in a ton, so you multiply.
3.75 x 2000 = 7500.
So you know the mother wears 7500 pounds.
If you learned percent and decimal conversion, you know that you move the decimal point two to the left to make a decimal into a percent (aka multiplying it by 100). So, to translate your percent into a decimal so we can multiply it, you divide it by 100.
3.8/100= 0.038
Now, you can multiply 0.038 by 7500 to find the calf's weight.
0.038 x 7500 = 285 pounds