Question
i) p2+p=56 Â Â Â Â Â Â Â Â Â Â Â
          II) q2-17q+72=0 In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answerÂSolution
I.p2 +p=56 or p2+p-56=0 p2+8p-7p-56=0 or, (p – 7)(p + 8) = 0 Or p = - 8 or 7 , II. q2-17q+72 , or (q – 8)(q – 9) = 0, Or q = 8 or 9, Hence, q > p
A alone can do a piece work in 15 days and the time taken by A alone is 50% more than the time taken by B. They started work together alternatively star...
Ravi and Manish can do a piece of work in 16 days and 20 days respectively. How long will it take to finish the work if Manish is to be replaced by Sanj...
A alone can complete a piece of work in 12 days and B alone can complete it in 18 days. If they work together, in how many days will they complete the w...
Gagan can do a piece of work in 14 days. Magan is 40% more efficient than Gagan. How many days will Magan and Gagan together complete the work?
Average speed of ‘A’ during a 22-hour journey is 22 km/h. If he covered the first 280 km of his journey at a speed of 20 km/h, then find the speed a...
Manoj can complete a job in 10 days which Rakesh can do in 15 days. Rakesh can finish a task in 20 days which Suresh can complete in 25 days. In how man...
A can finish a piece of work in 10 days and B can finish it in 15 days. If both work together, in how many days will the work be completed?
Akhil and Nikhil together can complete a work in 15 days while Nikhil alone takes 20 days to complete 50% of the work. If the efficiency of Sachin is 20...
- P, Q and R together can complete a task in 12 days. Q and R together can finish it in (72/5) days, and R alone can do half the task in 8 days. What is the ...
A completes 37.5% of a task in 9 days, B finishes 44.44% of the same task in 8 days, and C accomplishes 66.67% in 8 days. How many days will it take for...