For the following questions answer them individually
A sum of ₹2,400 is invested for 4 years at R% p.a, simple interest and the simple interest received is ₹1,152. Find the amount received after 3 years when the same sum is invested at (R + 8) % p.a, simple interest.
The average of 8 numbers is 12. If a number Y is added to each of these 8 numbers, then the average becomes 16. What is the value of Y?
The average of 10 consecutive even numbers is 25. If the even number just preceding the smallest of the 10 given numbers is also included, then what will be the new average?
A bus starts from a bus station after every 30 minutes in the same direction. The speed of each bus is the same. Z is riding a bike in the opposite direction at a speed of 25 km/h. Z meets each bus in 20 minutes. What is the speed of each bus?
Find the value of $$(13 \times 23) - \sqrt{758 + \sqrt{676}} - (49^{2} \times 1\div7) + 15 \times 33$$.
A train can cover a certain distance in 3 hrs. If the track management is improved, an increase in the speed of the train by 10 km/h is possible, which can reduce the above journey time by 30 minutes. Find the initial speed of the train.
In an election between two candidates, one got 60% of the total valid votes, and 10% of the votes were invalid. If the total number of votes cast were 10800, what was the number of valid votes for the other candidate?
The following bar graph shows the percentage increase in the price of crude oil on different days of a given week compared to its price on the previous day.
If the price of crude oil at the end of Friday was ₹44,800 per barrel, then what was the price (per barrel) of crude oil at the end of Thursday?
A work can be completed by X men in 15 days. 10 more men join them after 3 days. The remaining work is now completed in 8 days. What is the value of X?