Question

Last year Michelle adopter a pet rabbit sence it was adopted the rabbit weight has increased from 1 1/4 to 2 1/4 by what percentage has the rabbit weight increased

Answer 1

80%.

Explanation:

Given:

Last year Michelle adopter a pet rabbit sence it was adopted the rabbit weight has increased from 1 1/4 to 2 1/4.

Question asked:

By what percentage has the rabbit weight increased ?

Solution:

As we know:

`Percentage\ increased=(New\ value-old\ value)/(old \ value) *100`

Old value =
`1(1)/(4) =(4*1+1)/(4) =(5)/(4)`

New value =
`2(1)/(4) =(4*2+1)/(4) =(9)/(4)`

`Percent\ increased\ in\ weight=(new\ weight-old\ weight)/(old\ weight) *100`

`=((9)/(4)-(5)/(4) )/((5)/(4) ) *100\\ \\ =((9-5)/(4) )/((5)/(4) ) *100\\ \\ =((4)/(4) )/((5)/(4) ) *100\\ \\ =\frac{1}{{(5)/(4) } }*100\\ \\ =(4)/(5) *100\\ \\ =(400)/(5) \\ \\ =80\%`

Thus, weight of rabbit increased by 80%.