The speed of boat a down the stream is 125% of the speed in still water. If the boat takes 30 minutes to cover 20 km in still water, then how much time (in hours) will it take to cover 15 km upstream?
Archana took a loan of Rs.78,000 from a bank on 24t January 2012 at \(8\dfrac{3}{4}\)% per annum simple interest and paid it back on 18*June 2012. Find the total amount paid by Archana. (Approximated to nearest integer)
The following pie chart shows the annual expenditure on different items. What is the minimum angle in the given pie chart?
The number of mobile sim cards in 4 states/UT are given in the bar diagram. Study the diagram and answer the question.
In Delhi, the ratio of BSNL Sim-cards and Airtel Sim-cards sold is:
For any acute angle θ, sin θ + sin² θ = 1, then the value of cos² θ + cos⁴ θ = ___________.