5 girls can do a piece of work in 9 days, 4 boys can do the same piece of work in 8 days, 6 men do the same piece of work in 2 days and 4 women can do the same piece of work in 4 days. Who is least efficient?
5 girls can do a piece of work = 9 days 1 girl can do a piece of work = 9 × 5 = 45 days. 4 boys can do a piece of work = 8 days 1 boy can do a piece of work = 4 × 8 = 32 days. 6 men can do a piece of work = 2 days 1 men can do a piece of work = 6 × 2 = 12 days. 4 women can do a piece of work = 4 days 1 woman can do a piece of work = 4 × 4 = 16 days. Hence, girls are least efficient.
I. p2 - 19p + 88 = 0
II. q2 - 48q + 576 = 0
I. 20x² - 93x + 108 = 0
II.72y² - 47y - 144 = 0
I. 2x2– 25x + 33 = 0
II. 3y2+ 40y + 48 = 0
I. 27x6- 152x3+ 125 = 0
II. 216y6- 91y3+ 8 = 0
I.√(3x-17)+ x=15
II. y+ 135/y=24
I. 8a2 – 22a+ 15 = 0
II. 12b2 - 47b + 40=0
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer
I. x2 – ...
I. 27x6-152x3+125=0
II. 216y6 -91y3+8=0
I. x2 - 20x + 96 = 0
II. y2 - 23y + 22 = 0
I. y² - 7 y – 18 = 0
II. x² + 10 x + 16 = 0