10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?

Rinky borrowed a certain sum of money from Kajal under the following repayment scheme based on simple interest. 8% p.a. for the initial 2 years, 9.5% p.a. for the next 4 years, 11% p.a. for the next 2 years, 12% p.a. after the first 8 years. Find the amount which a sum of Rs. 9000 taken for 12 years becomes at the end of 12 years?

A and B start moving from places X and Y and Y to X, respectively, at the same time on the same day. After crossing each other, A and B take $$5{4\over 9}$$ hours and 9 hours, respectively, to reach their respective destinations. If the speed of A is 33 km/h, then the speed (in km/h) of B is:

Sound travels 330 meters in one second. When the sound is heard 10 seconds after the lightning flashes, then at what distance will the cloud be?

The table below shows the number of overs bowled and the number of wickets taken by five bowlers in a match

If in each over every bowler bowled 6 balls, in that match which bowler had bowled the highest number of balls per wicket taken by hin1?

P is a point outside a circle and is 26 cm away from its centre. A secant PAB drawn form P intersects the circle at points A and B such that PB=32 cm and PA=18cm. The radius of the circle (in cm) is:

A and B start at the same time with speeds of 40 km/hr and 50 km/hr respectively. If in covering the journey A takes 15 minutes longer than B, the total distance of the journey is

Kamal saves x% of her monthly income. When her monthly expenditure is increased by 20% and the monthly income is increased by 26%, then her monthly savings increased by 60%. What is the value of x?