A number decreased by `15%` gives `68` the number is.​

A number decreased by 30% gives 84. the number is

A number decreased by 8% gives 69. the number is

A number decreased by 40% gives 135. the number is

A number decreased by 20(1)/(2)% gives 62. The number is

A number decreased by 27(1)/(2)% gives 87. The number is

Twice a number when decreased by 9 gives 15. Find the number

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease?

A number is increased by 10% and the increased number is decreased by 10%. Show that the net decrease is 1%