Answer:

Decimal form: 0.65
Step-by-step explanation:

To add, you need to get the denominators to be the same, so find the lowest number that both 4 and 5 fit into (multiplication):
4, 8, 12, 16, 20
5, 10, 15, 20
20 is the lowest common multiple of both. So multiply
by 5 (both top and bottom) and
by 4 (top and bottom) so that the denominators will have the same value:

Simplify

Now you can add the numerators. Keep the denominators the same:

This is the most simplified version.
Answer:
12 boys
Step-by-step explanation:

Cross simplify

That means that there are 20 girls in the class.
32-20= 12
Answer:
262.5
Step-by-step explanation:
all you have to do is mutiply the decimal version of the percent so .35 by 750 which gives you the answer
hope this helps