Question

If a group of 250 students it was found that the numbers of student who like football is thrice of who like volleyball if 30 students like both and 20 like none find who like volleyball only ​

Answer 1

Answer:

whatthefuck.

I have to be able to get it. I will be in touch with me.

Answer 2

Step-by-step explanation:

We can draw a venn diagram to show the numbers playing football (F) or hockey (H). We can put in the numbers for the first two facts straight away, as seen on the left.

The 8 students who play both hockey and football go in the intersection because they need to be in both circles. The 7 students who don't play either sport go on the outside because they shouldn't be in either circle.

We have to be careful with the other two facts. There are 13 students who play hockey, so the numbers in the hockey circle should add up to 13. We already have 8 in the intersection, so there must be 5 who play hockey but not football. In the same way there are 19 students who play football so the number who play football but not hockey must be 19 – 8 = 11.

To find out the number of students in the class we add up all the sections: 11 + 8 + 5 + 7 = 31

There are 31 students in the class.