Question

Kenny wants to learn how to serve overhand in volleyball. When he practiced yesterday, he made 7 serves over the net for every 2 serves that did not go over the net.If Kenny attempted 36 serves yesterday, how many serves did he make over the net?

Answer 1

Answer: 28

Explanation:

Given

Kenny made 7 serves over the net for every 2 serves that did not go over the net i.e. success rate of Kenny is

`\Rightarrow \text{success rate}=(7)/(2+7)* 100=(700)/(9)\%`

for 36 serves, applying the same success rate, it is

`\Rightarrow \text{success rate}=(700)/(9)*(1)/(100)* 36=28`

Serves that did not make over the net is
`36-28=8`

Thus, Kenny will make 28 serves that make over the net