Question

7. After spending 88 % of his income , a man - has 2160 left . Find his income .

Answer 1

AnswEr :

Let the Total Income Be X.

• Rest Income = (100 - 88) = 12%

A.T.Q.

☢ x × 12% = 2160

☢ x × $\large\frac{12}{100}$ = 2160

☢ x × $\large\frac{1}{100}$ = 180

☢ x = 180 × 100

☢ x = Rs. 18,000

$\huge{\red{\ddot{\smile}}}$

Answer 2

18000

Answer:

suppose that the total income = x

88% of x = x - 2160

$\frac{88}{100} \times x = x - 2160$

then dividing the left hand side by 4

$\frac{22}{25} \times x = x - 2160$

$\frac{22x}{25} = x - 2160$

cross multiply

$22x = 25(x - 2160)$

$22x = 25x - 54000$

taking the 22x to R.H.S. and 54000 to L.H.S.

54000=25x - 22x

54000=3x

dividing 54000 by 3

x=18000