NCERT#!#Ratios to Percents#!#Increase or Decrease as Per Cent

Ten Per Cent Law

Converting Fractional Number To Percentage|Converting Decimals To Percentage|Converting Ratio To Percentage|Converting Percentage To Fractions Or Decimals|Question Practice|Increase Or Decrease As Percent |OMR

Formulae for finding increase or decrease per cent :

If the radius of the earth decreases by 1% without changing its mass, will the acceleration dure to gravity at the surface of the earth increase or decrease? If so, by what per cent?

A number is increased by 20 % and then decreased by 20 % find the net increase or decrease per cent ?

Per cent means____.

a number is increased by 20% and the increased number is decreased by 20% find the net increase or decrease per cent

A number is increased by 20% and then it is decreased by 10%. Find the net increase or decrease per cent.

A number is increased by 20% and then it is decreased by 20%. Find the net increase or decrease per cent.

If the height of a cylinder is increased by 15 percent and the radius of its base is decreased by 10 percent then by what percent will its curved surface area change? (a) 3.5 percent decrease (b) 3.5 percent increase (c) 5 percent decrease (d) 5percent increase