Question 44
Four times a number is a ___ % increase in the number.
Let x be the number. So, four times of x is 4x. Hence, 4x is greater than x by 4x - x = 3x ∴ Percentage increase in x=3xx×100=300%
Question 52
Three times a number is 200% increase in the number, then one-third of the same number is 200% decrease in the number.
Question 74
Two times a number increased by 5 equals 9. Find the number.
Two times a number is a 100% increase in the number. If we take half the number what would be the decrease in percent ?
Question 63
Express the given statement as an equation.
Five times a number increased by 7 is 27.
Twice a number increase by 5 is the same as 3 times the number decreased by 8, find the number