If 15 boys earn ₹900 in 5 days, then how much will 20 boys earn in 7 days?
Answer & explanation
Correct answer: option 2
Formula to be used here,
\(\frac{M_1\;×\;D_1}{M_2\;×\;D_2}\) = \(\frac{R_1}{R_2}\)
where, M = No. of Men, D = No. of Days, R = Rate/wages,
⇒ Putting in the values,
⇒ \(\frac{15\;×\;5}{\;×\;7}\) = \(\frac{900}{R_2}\)
⇒ \( { R}_{2 } \) = Rs. 1680.