5
25
6
12
8
30
If . What is the value of
A certain type of board is sold only in lengths of multiplies of 2 metres. The shortest board sold is 6 metres and the longest is 24 metres. A builder needs a large quantity of this type of board in metres lengths. For minimum waste, the lengths to be ordered should be-
10 metres
12 metres
22 metres
24 metres
a + b
(a + b) (a - b)
None of these
Mr. Sharma rents a car for d days. He pays p rupees per day for each of the first 7 days, and half that rate for each additional day. Find the total charge if d > 7.
If of the liquid contents of a can evaporates on the first day and of the remainder evaporates on the second day, the fractional part of the original contents remaining at the close of the second day is -
The average of three numbers is 15. What is two times the sum of the three numbers ?
18
15
90
45
If 2m =4x and 2w =8x, what is m in terms of w ?
w - 1
w + 2
2w - 3
2w + 1
