A car travels 27km in 2 hours. How far would it travel in 7 hours:
90km
92km
93.7km
94.5km
55.
x^2-y^2/ x+y =?
x,y
x^2
x^2-y^2
y^2
56.
2x+4x+6x=?
2x (x^2+2x 3)
3x(x)
2x (x+5)
4x+x
57.
Ifx=2, then what is the value of x^3 +2x 2:
8
6
0
2
58.
Machine x produces w widgets in five minutes. Machinex and machine y, working at the same time, produce w widgets in two minutes. How long machine y will take while working alone to produce w widgets.
30 minutes
15 minutes, 5 seconds
10 minutes,3 sec
3 minutes,20 seconds
59.
A tank with capacity T gallons is empty. If water flows into the tank from Pipe x at the rate of x gallons per minute and water is pumped by Pipe y, at the rate of y gallons per minute, and x is great than y, in out how many minutes will the tank be filled?
T/x-y
T/x
T(x+y)
x+y
60.
If a number is multiplied by gives the same answer as when is added to it?