Manoj gave 60% of his salary to his wife and invested rest amount in mutual funds. His wife spends 30% amount on grocery and 20% on rent. From remaining amount, she purchased gold worth Rs. 18000. Find salary of Manoj.

let salary of Manoj be Rs 100x

Amount given to wife = $frac{{60}}{{100}} imes 100x = { m{Rs}}.{ m{;}}60x$

ATQ, $60x imes frac{{50}}{{100}} = 18000$

x=600

Salary of Manoj = 100x=???????? 60000