find the percentage change in each case
18g to 22.5 g
rs 400 to rs 840
20 to 18
4m to 3m
the answers are
25% increase , 110% increase , 10% increase , 25% decrease
please explain the process
Answers
Step-by-step explanation:
Percentage change is calculated as follows:
Percentage Change = ((New Value - Old Value)/Old Value) x 100%
Let's calculate the percentage change in each case:
18g to 22.5 g:
Old value = 18g
New value = 22.5g
Percentage change = ((22.5 - 18)/18) x 100%
= 25%
Therefore, there is a 25% increase in weight from 18g to 22.5g.
Rs 400 to Rs 840:
Old value = Rs 400
New value = Rs 840
Percentage change = ((840 - 400)/400) x 100%
= 110%
Therefore, there is a 110% increase in price from Rs 400 to Rs 840.
20 to 18:
Old value = 20
New value = 18
Percentage change = ((18 - 20)/20) x 100%
= -10%
Therefore, there is a 10% decrease in value from 20 to 18.
4m to 3m:
Old value = 4m
New value = 3m
Percentage change = ((3 - 4)/4) x 100%
= -25%
Therefore, there is a 25% decrease in length from 4m to 3m.