A bag contains 20 rupees note, 50 rupees note and 100 rupees note in the ratio 5:7:2. If the total amount in the bag is Rs 2,600, find the average number of 20 rupees note and 50 rupee note.
Ratio of values of the notes = 5 ×20∶7×50∶2 ×100 = 2:7:4 Value of 20 rupees note = 2600×2/13= Rs. 400 Value of 50 rupees note = 2600×7/13= Rs. 1400 Value of 100 rupees note = 2600×4/13= Rs. 800 Number of 20 rupees note = 400/20 = 20 Number of 50 rupees note = 1400/50 = 28 Number of 100 rupees note = 800/100 = 8 Average of 50 & 20 rupee note = (20+28)/2 = 24
I.8(x+3) + 8(-x) =72
II. 5(y + 5) + 5(-y) = 150
I. 20y² - 13y + 2 = 0
II. 6x² - 25x + 14 = 0
I. (4x-5)3 + 1/(4x-5)3 = 2
II. 2[(y+1/y)2- 2]- 9(y+1/y)= -14
I. 117x² + 250x + 117 = 0
II. 54y² -123y + 65 = 0
I. 20y² - 13y + 2 = 0
II. 6x² - 25x + 14 = 0
I. 2y2+ 31y + 99 = 0
II. 4x2+ 8x – 45 = 0
I. x² + 11x + 24 = 0
II. y² + 17y + 72 = 0
I. 2b2 + 31b + 99 = 0
II. 4a2 + 8a - 45 = 0
I. 4x² - 15x + 9 = 0
II. 20y² - 23y + 6 = 0
I. x2 - 9x - 52 = 0
II. y2 - 16y + 63 = 0
