Akhil rides first 12 km at a speed of 16 km/h and further 6 km at a speed of 20 km/h. Find his average speed (in km/h).
25 persons can complete a work in 60 days. They started the work. 10 persons left the work after x days. If the whole work was completed in 80 days, then what is the value of x ?
What sum will give Rs 244/- as the difference between simple interest and compound interest at 10% pa in 1½ years compounded half-yearly?
Find the quarterly instalment that will discharge a debt of Rs 2120 due in 1 years at 16% per annum simple interest.
The value of \({30.25 \% \space of \space 40200} \over 16.75 \% \space of \space 24200\)is