If 2/5 of the students in the class are girls. what fraction are the boys. If the class has 35 students, how many boys are in the class?

If 2/5 of the students in the class are girls, what fraction are the boys?

[] Let's say the whole class is equal to 5/5.

[] If there are only girls and boys in the class, then we can do the math 5/5 - 2/5 = 3/5 to find 3/5 of the class is boys

-> 3/5 of the class is boys

If the class has 35 students, how many boys are in the class?

[] With the second part of this problem, we are given more information.

[] Our whole, 5/5 before, is equal to 35. We can multiply 3/5 (boys in the class) by our whole, 35, for our answer.

[] This gives us 21 boys in the class. We can test this by seeing that 3/5 = 21/35, so this solution makes sense.

-> There are 21 boys in the class

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies