• 13

  • 15

  • 14

  • 12


According to question , Given :- Age of Ramu = 48 years Age of Robin = Age of Ramu - 6 years = 48 – 6 = 42 years Age of Rohit = Age of Robin - 14 years = 42 – 14 = 28 years Age of Krishna = Age of Rohit - 15 years = 28–15 =13 years Hence , Age of Krishna is 13 years .

Rani bought a piece of cloth for Rs. 950 and spent Rs. 300 on designing it. At what price should she sell it to make 30% profit?

Rashim knits a sweater in 3 days while Smita knits it for 9 days. How much days they both would take to knit 2 sweaters together ?

Ratio of present ages of P and Q is 20 : 6. After 10 years, Ps age is thrice of Qs age then find present ages of P and Q?

Raveena left house for the bus stop 15 min earlier than usual. It takes 10 min to reach the stop. She reached the stop at 8 : 40 am. What time does he usually leave home for the bus stop?

Ravi and Ajay start simultaneously from a place A towards B 60 km apart. Ravis speed is 4km/h less than that of Ajay. Ajay, after reaching B, turns back and meets Ravi at a places 12 km away from B. Ravis speed is:

Ravi and Kavi start a business by investing ₹ 8000 and ₹ 72000, respectively. Find the ratio of their profits at the end of year.

Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

Ravi and Shyam enter into a partnership and together start a business with contributions of Rs. 15000 and $ 20000. After 4 months Mohan also joins them with contribution of $ 22500. After 9 months Shyam withdraws his contribution. At the end of the year there is a profit of $ 9000. Find the share of each in the profit.

Ravi starts a business with $ 45000. After a certain period of time he is joined by Mohan who invests $ 30000. At the end of the year they divide the profit in the ratio 9 : 4. When did Mohan join Ravi?

Ravi, Rohan and Rajesh alone can complete a work in 10, 12 and 15 days respectively. In how many days can the work be completed, if all three work together ?

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