Question

Alka spends 90%of the money that she receives every month of saves "120. How much money does she get monthly​

Answer 1

Answer:

Now Alka spends 90% of the money every month. This means that Alka earns 1200 Rupees per month

Answer 2

$⇒ Let \: the \: income \: is \: x$

$Alka \: spends \: 90\% \: of \: its \: income \: 90\% \: of \: x \:Rs.$

$\frac{90}{100} \times x = 0.9x \\ ...(According \: to \: given \: condition) \\ x - 0.9x = 120 \\ 0.1x = 120 \\ ∴x = \frac{120}{0.1} \times \frac{10}{10} \\ x = \frac{1200}{1} \\ x = 1200 \\ \\ \\ ∴x = 1200Rs.$