Question

An ice cream machine produced 44 ice creams per minute. After reconditioning, its speed increased to 55 ice creams per minute. By what percent did the speed of the machine increase?

Answer 1

`25\%`

Explanation:

we know that

`44(ice\ cream)/(minute)` ------> represent the
`100\%`

so

by proportion

Find what percent did the speed of the machine increase

`(100)/(44)(\%)/(ice\ cream)=(x)/(55-44)(\%)/(ice\ cream) \\ \\x=(55-44)*100/44\\ \\x=11*100/44\\ \\x=25\%`

Answer 2

an ice cream machine produced 44 ice cream per minute.
Now, after reconditioning it speeds up to 55 ice cream per minute.
=> 55 - 44 = 11
=> 11 / 44 = 0.25
=> 0.25 * 100% = 25%.
thus it increased it production to 25%.