Question

What Number:
When increased by 80% becomes 900 ? ​

Answer 1

Answer:

x+90x/100=900

190x=90000

x=90000/190

x=473.69

Answer 2

Answer:

hope its help you

Step-by-step explanation:

New value = Initial value + Absolute percentage change (difference)

Absolute percentage change (difference) = Percentage increase % × Initial value

=> New value = Initial value + Percentage increase % × Initial value = (1 + Percentage increase %) × Initial value

In conclusion:

New value = (1 + Percentage increase %) × Initial value

Initial value = New value / (1 + Percentage increase %)

Absolute percentage change (difference) = Percentage increase % × Initial value = New value - Initial value

Examples of calculations on how to increase a number by percentage of its initial value (percentage increase) and calculate the absolute percentage change (difference):

If Percentage increase % = 20%, (1 + Percentage increase %) = 1 + 20% = 100/100 + 20/100 = 120/100 = 1.20 => Number increased by value percentage = 1.20 × Initial value, and Initial value = Number increased by value percentage / 1.20; Absolute percentage change = New value - Initial value;

If Percentage increase % = 5%, (1 + Percentage increase %) = 1 + 5% = 100/100 + 5/100 = 105/100 = 1.05 => Number increased by value percentage = 1.05 × Initial value, and Initial value = Number increased by value percentage / 1.05; Absolute percentage change = New value - Initial value;

If Percentage increase % = 124%, (1 + Percentage increase %) = 1 + 124% = 100/100 + 124/100 = 224/100 = 2.24 => Number increased by value percentage = 2.24 × Initial value, and Initial value = Number increased by value percentage / 2.24; Absolute percentage change = New value - Initial value;

If Percentage increase % = -8%, (1 + Percentage increase %) = 1 - 8% = 100/100 - 8/100 = 92/100 = 0.92 => Number increased by value percentage = 0.92 × Initial value, and Initial value = Number increased by value percentage / 0.92; in this case we have in fact a decreasing of the value of the number; Absolute percentage change = New value - Initial value.