15 persons working 6 hours per day earn ₹900. How much money will 20 persons earn, working 10 hours per day?

₹1,800 ₹1,500 ₹2,000  ₹2,100

₹2,000

Formula to be used here,  ⇒ \(\frac{M_1\;×\;H_1}{M_2\;×\;H_2}\) = \(\frac{E_1}{E_2}\) where, M = No. of Men, H = No. of hours, E = Earnings, ⇒ Putting values in the formula, ⇒ \(\frac{15\;×\;6}{20\;×\;10}\) = \(\frac{900}{E_2}\) ⇒ \( { E}_{2 } \) = Rs. 2000.