The sum of numbers when a number is increased by 10% and decreased by

1.	The sum of numbers when a number is increased by 10% and decreased by 10% is 100 what is thenumber?Lamrequires30%topass. Ir negets 200 main, ians oyhu20% and his saving
Answer» Let the no. be nWhen no. Increased by 10%= n + n(10/100) = n (1 + 1/10)= n(11/10) When no. decreased by 10%= n - n(10/100)= n(1-1/10) = n(9/10) Givenn(11/10) + n(9/10) = 100n(20/100) = 100n(1/5) = 100n = 500 Number is 500

The sum of numbers when a number is increased by 10% and decreased by 10% is 100 what is thenumber?Lamrequires30%topass. Ir negets 200 main, ians oyhu20% and his saving

Answer»

Let the no. be nWhen no. Increased by 10%= n + n*(10/100) = n (1 + 1/10)= n*(11/10)

When no. decreased by 10%= n - n*(10/100)= n(1-1/10) = n*(9/10)

Givenn*(11/10) + n*(9/10) = 100n(20/100) = 100n(1/5) = 100n = 500

Number is 500