For the following questions answer them individually
The average weight of 10 boys is increased by 3 kg if one of them weighing 40 kg is replaced by a new boy. The weight of the new boy is:
What is the value of $$\frac{156}{13} \times \frac{147}{24} \times \frac{8}{49}$$ of $$\frac{24}{144}Â ?$$
The monthly consumption of milk of 90 students in a school hostel is 183 litres. If the monthly ration of milk is increased to 915 litres, how many students can be accommodated in the hostel? (Assuming that per capita milk consumption remains the same)
Priya borrowed a certain sum at the rate of 12% per annum. If she paid Rs. 10176 at the end of 2 years as interest compounded annually. What was the sum she borrowed?
A man bought an old printer for Rs.2200 and spent Rs.800 on its repair. He sold it for Rs.3600. Find his profit percentage.
A solid cylinder having radius of base as 21 cm and height as 16 cm is bisected from its height to get two identical cylinders. What will be the percentage increase in the total surface area?
What will be the curved surface area of cylinder having radius 20 cm and height 34 cm? (use $$\pi = 3.14$$)
The first, third and fourth terms of a proportion are 8, 16 and 6 respectively. What is the second term?
