$${\sqrt{4×?}}={160\over 10}$$

$$\left({?-0.5\over 0.2} \right)={120\over 2}$$

A started a business by investing Rs. 50,000. After 6 months B joined him by investing Rs. 75,000. After another 6 months C joined with Rs. 1,25,000. What is the ratio of profit shared after 2 years among A, B and C?

In 64 liter of pure milk, 20 liter of water is mixed and then $$ {1\over 4}{th}$$ of the mixture is taken out. When x liter of water is added again then ratio of water to that of the milk becomes 1:2. Find value of x?

If circumference of first circle is 132 cm and circumference of second circle is 110 cm then find the difference between area of both the circle?

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

In what ratio is the segment joining (-1,-12) and (3,4) divided by the x-axis?

The 4th term of an arithmetic progression is 15, 15th term is -29, find the 10th term?