Ram can do 60% of a task in 12 days, while Shyam can do 40% of same task in  days and Mohan takes  days to complete 55% of same task. If all three work together, then find how many days required to complete the work?

A fruit seller bought dozens of bananas at the rate of Rs. 8 per banana. Out of total bananas some are good quality and some are bad quality, if seller sold good quality banana at the rate of Rs. 10 and bad quality banana at the rate of Rs. 2.8 per banana, so in this transaction there is no gain and no loss. Find total good quality of banana sold by fruit seller?

P, Q and R inter into a business by making a investment of Rs. X , Rs (x + 2000) and Rs. (x + 3500) respectively. if P, Q and R invested for 9 months, 8 months and 6 months respectively. Find investment of P, if ratio between total profit share of P and (Q + R) is 12 : 31?

Prashant took a loan of Rs. 250,000 from SBI at the rate of 12% compounded annually. If at the end of every year Prashant paid Rs. 120,000, then find amount should Prashant have to pay for clear his loan at the end of three years?

A man have two dices. if he rolled both dice, then find the probability of that the sum of digits of both dice will be either 6 or 9?

 Motor boat A start from point P at 7 AM toward point Q in upstream, while motor boat B start from point Q at 9 AM in downstream. Speed of stream is 14 km/hr and distance between point P and Q is 1800 km. If speed of boat A and boat B in still water is 94 km/hr and 106 km/hr respectively, then find what time both motor boats will meet?

Ratio between age of Mohit and Prashant four year ago was 7 : 8 and six year hence will be 19 : 21. If Ram is two year younger than Prashant, then find ratio between present age of Mohit and Ram?

Rajesh divided 60% of his monthly income among his wife, son and daughter in the ratio of 3 : 2 : 1, out of remaining he spend 15% on rent, 40% on food. If difference between amount get by Rajesh son and amount spend on food is Rs. 1280. Find monthly income of Rajesh?

Ratio between length and breadth of rectangle is 3 : 2 and perimeter of rectangle is half of the perimeter of square, which area is 900 cm² . Find the area of rectangle?

What will come in place of the question mark (?) in the following questions?(You are not expected to calculate exact values)

(12.08)² + ? % of 2249.98 = (33.01)²