Given quantity of rice each student get per day = 3/20 kg.
Quantity of rice 60 students get per day = \(\frac {3}{20}\times \frac {60}{1}\)
= \(\frac {3\times60}{20\times1}\)
= \(\frac {3\times60}{20\times1}\) = 9
∴ Quantity of rice required for 60 students per day = 9 kg.