## The speed of a motor boat is 20 km/hr. For covering the distance of 15 km the boat took 1 hour more for upstream than downstream.

##
**
Question 1
**

##
Let speed of the stream be
*
x
*
km/hr. then speed of the motorboat in upstream will be

(a) 20 km/hr

(b) (20 + x) km/hr

(c) (20 – x) km/hr

(d) 2 km/hr

##
**
Question 2
**

##
What is the relation between speed ,distance and time?

(a) speed = (distance )/time

(b) distance = (speed )/time

(c) time = speed x distance

(d) speed = distance x time

##
**
Question 3
**

##
Which is the correct quadratic equation for the speed of the current ?

(a) x
^{
2
}
+30x-200=0

(b) x
^{
2
}
+20x-400=0

(c) x
^{
2
}
+30x-400=0

(d) x
^{
2
}
-20x-400=0

##
**
Question 4
**

##
What is the speed of current ?

(a) 20 km/hour

(b) 10 km/hour

(c) 15 km/hour

(d) 25 km/hour

##
**
Question 5
**

##
How much time boat took in downstream?

(a) 90 minute

(b) 15 minute

(c) 30 minute

(d) 45 minute