Part C - Elementary Mathematics
The average weight of Mukund, Sachin and Chetan is 46 kg. If the average weight of Mukund and Sachin be 39 kg and that of Sachin and Chetan be 45 kg, then the weight of Sachin (in kg) is:
A bus covers a distance of 30 km in 45 minutes and further it covers double the distance covered earlier in 60 minutes. The average speed of the bus is ______ km/hr (rounded off to two decimal places).
Kanchan bought a ring and sold it to Mohan at a profit of 5%. Mohan sold it to Pramod at a loss of 25%. If Pramod paid โน3150, then the cost price (in โน) of the ring Kanchan bought is: