If the roots, of the equation ax2-px + 54= 0 are in the ratio 2:3, then the value of p is
18
21
-21
15
If A = {x :x is a letter in word BELOW}, B = {x: x is a letter in word WOOL} and C=A - B, then the number of subsets of C is
1
2
3
4
44 cows can graze a field in 9 days. How many less/more cows will graze the same field in 12 days
15 cows more
11 cows more
11 cows less
15 cows less
If A's salary is 20% more than that of B, then how much percent of B's salary less than that of A?
25%
18%
20%
15%
If two adjacent sides of a square paper are decreased by 20% and 40% respectively, by what percentage does the new area decrease?
50
52
60
48