Question

In a particular month, Lakshmi spent one-fifth of her salary on shopping, One-fifth of the remaining she gave to her sister. If she has Rs 12800 left, what was her salary in that month?
please help​

Answer 1

Answer:

Rs 20,000

Step-by-step explanation:

Let, Lakshmi's salary be Rs x

Lakshmi Spent One-Fifth of her salary at shopping

i.e. (1/5)x

Let her remaining salary(4/5)x be Rs y,

She spent One-Fifth of her remaining salary to her sister

i.e. (1/5)y

Laksmi had Rs. 12800 left

i.e. (4/5)y = 12800

y = (12800*5)/4

y = 16000 .........................(1)

Now,

When Lakshmi spent (1/5)x at shopping she had

(4/5)x left = y

(4/5)x = 16000 (From Eq. 1)

x = (16000*5)/4

x = Rs20,000

Hence, Lakshmi's salary in that particular month was Rs 20,000

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