For the following questions answer them individually
A person deposited ₹500 for 3 years, ₹650 for 5 years, and ₹1,250 for 7 years. He received a total simple interest of ₹1,620. The rate of interest per annum is:
Rakshit, Ajay, and Satish are sanitation workers in a Municipal Corporation. Rakshit alone takes 20 hours to clean a drain while Ajay takes 12 hours when working alone to do the same. All three together take only 5 hours to clean the drain. In how many hours, can Satish complete the work alone?
$$\triangle$$ ABC - ADEF and the perimeters of $$\triangle$$ ABC and $$\triangle$$ DEF are 40 cm and 12 cm, respectively. If DE = 6 cm, then AB is:
On a circular path of 693 m, Sujata and Anjali start walking from the same point but in the opposite directions at the speed of 2.85 km/h and 1.5 m/sec, respectively. When they will meet for the first time?
15 men and 25 women can complete a piece of work in 9.6 days. If 16 women can complete the same work in 27 days, find the number of days in which 16 men can complete the same work.
Industrial growth of different countries (in crores of ₹):
How many countries' industrial growth is more than the average industrial growth?
If the area of a circle is 616 $$cm^{2}$$ and a chord XY = 10 cm, then find the perpendicular distance from the center of the circle to the chord XY.