Ritu and Mona can finish painting a house together in 18 days. Ritu alone would take 27 days to finish the painting. How long will it take Mona to finish the painting on her own?
The average score of 7 players was initially recorded as 55. However, it was later discovered that a score of 35 had been mistakenly read as 53. Determine the correct average score (rounded up to two decimal places).
The average age of 54 students of a class is 37 years. If the age of the teacher is also included, the average age of the whole group becomes 38 years. The age (in years) of the teacher is:
Vijay has ₹1224 with him. He divided it amongst his sons Ajay and Prakash and asked them to invest it at 4% rate of interest compounded annually. It was seen that Ajay and Prakash got same amount after 18 and 19 years respectively. How much (in ₹) did Vijay give to Prakash?