For the following questions answer them individually
Which scheme among the following is most beneficial to the customer?
i) Successive discounts of 25% and 25%
ii) Flat discount of 40%
iii) Buy one, get one free
iv) Successive discounts of 30% and 20%
A 640 metre long train travelling at 80 km/h overtook a 540 metre long train travelling at 72 km/h in the same direction. How long did it take the faster train to cross the other train completely?
In an assembly election of two candidates, the winner got 56% of the total valid votes. 5% of the total votes were declared invalid. If the total number of voters is 3,20,000 then what is the number of valid votes polled for the winning candidate?
Study the given pie charts carefully and answer the question that follows.
The expenditure on Food in 2021 was what percentage of the expenditure on Education in 2020?
Simplify: $$\frac{6}{5} \div \frac{6}{5}$$ of $$\frac{6}{5} \times \frac{5}{6} + \frac{9}{4} \div \frac{4}{5}$$ of $$\frac{15}{2} - \left\{8\frac{5}{9} + \left(\frac{4}{3}+\frac{5}{3} of \frac{6}{25}\right)\right\}$$
A dice is thrown 150 times, with the frequencies for the outcomes 1, 2, 3, 4, 5 and 6 being as given in the following table. How many times is the number appearing on the dice a prime number?
A bus covers a certain distance travelling at a speed of 40 km/h and returns to the starting point at a speed of 60 km/h. The average speed (in km/h) for the entire journey is: