The sum of a non-zero number and thrice its reciprocal is 52/7. Find the number.

Prabodh has done 1/2 of a job in 30 days, Sapan completes the rest of the job in 45 days. In how many days can they together do the job?

If a - b = -7 and a2+ b2= 85, then find ab.

If (9 - 3x) - (17x - 10) = -1, then the value of x is

Ticket for an adult is Rs 1500 and a child is Rs 800. 1 child goes free with two adults. If a group has 25 adults and 12 children what is the discount the group gets?

The area of a square is 100 sq cm, find length of its diagonal?

Find length of the arc whose central angle is 45° and radius of the circle is 28 cm?

The average weight of Shubha, Govinda and Reshma is 65 kg. If the average weight of Shubha and Govinda be 63 kg and that of Govinda and Reshma be 70 kg, then the weight of Govinda is