Question

Ram saves Rs. 2000 and spends 20% of his income. His income is
(a) Rs. 500 (b) Rs. 2500 (c) Rs. 1500 (d) none of the​

Answer 1

Answer:

let the income be x rs

80 percent of x is 2000

80/100 × x=2000

8/10× x=2000

x=10×2000/8

x=20000/8

x=2500

hence his income is 2500 rs

answer is option (b)

Answer 2

Answer:

Let his income be Rs. x .

Atq,

$\: \: \: \: \: \: \: \: x = 20\% \: of \: x + 2000$

$= > x = \frac{20}{100} \times x + 2000$

$= > x = \frac{x}{5} + 2000$

$= > x - \frac{x}{5} = 2000$

$= > \frac{5x - x}{5} =2000$

$= > \frac{4x}{5} = 2000$

$= > 4x = 5 \times 2000$

$= > x = \frac{5 \times 2000}{4}$

$= > x = 5 \times 500$

$= > x = 2500$

Hence, his income = Rs. 2500

(b)Rs. 2500 is right option.