If the arithmetic mean of the roots of a quadratic equation is 8/5 and the arithmetic mean of their reciprocals is 8/7 then theequation is5×2 + 16x + 7 = 0B5×2 – 16x + 7 = 0с7×2 + 16x + 5 = 0D7×2 – 16x + 5 = 0 About the author Emma
Answer: Let the C P of the toy = Rs.100 If the gain is 12%, the first S P = 100 + 12 = Rs.112 If he had been sold Rs.33 more gain = 14 % Therefore second S P = 100 = 14 = Rs 114 . Difference in second S P and first S P = Rs.2 [ 114 – 112=2] If Rs,2 is the difference in S P , cost price = Rs. 100 If the difference in S P is Rs.33, cost price = 100/2*33= 50 x 33 = Rs1650 Reply
Answer:
Let the C P of the toy = Rs.100
If the gain is 12%, the first S P = 100 + 12 = Rs.112
If he had been sold Rs.33 more gain = 14 %
Therefore second S P = 100 = 14 = Rs 114 .
Difference in second S P and first S P = Rs.2 [ 114 – 112=2]
If Rs,2 is the difference in S P , cost price = Rs. 100
If the difference in S P is Rs.33, cost price = 100/2*33= 50 x 33 = Rs1650