Mixed Quantitative Aptitude Questions Set 149

1. The time taken by a boat to cover ‘x’ km upstream at speed of ‘u’ km/hr. is same as the time taken by it to cover 80 km downstream at speed ‘v’ km/hr. If u:v = 4:5 resp. Find the value of x.
   50
   77
   72
   81
   64
   Option E
   u:v = x:80
   4:5 = x:80
   =>x = 64
   
   
    



2. The speed of a boat in still water in 22 km/hr and the rate of current is 4 km/hr. The distance travelled downstream in 24 minutes is:
   11.9 km
   14.5 km
   16.6 km
   10.4 km
   12.2 km
   Option D
   Speed downstream = (22 + 4) = 26 kmph
   Time = 24 minutes =24/60 hour
   Distance travelled = Time × speed = 2/5×26 = 10.4 km
   
   
    



3. Two bikes A and B were sold at Rs.60,000 each. If bike A was sold at 20% profit and B was sold at 20% loss.What is the difference between the cost price of both the bikes?
   23000
   20000
   25000
   31000
   33000
   Option C
   CP(A) = 60000/1.2 = 50000
   CP(B) = 60000/0.8 = 75000
   Difference = 75000-50000 = Rs.25000
   
   
    



4. Murali purchased 20 dozens of toys at the rate of Rs. 375per dozen. He sold each one of them at the rate of Rs. 33. Find out his profit percentage.
   5.6%
   4.9%
   3.2%
   4.4%
   3.9%
   Option A
   cost price of 12 toys =375
   selling price of 12 toys =33×12=396
   profit =396−375=21
   profit percentage = [21×100]/375
   =7×4/5=5.6%
   
   
    



5. P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
   9/14
   8/15
   6/13
   6/11
   7/19
   Option B
   Amount of work P can do in 1 day = 1/15
   Amount of work Q can do in 1 day = 1/20
   Amount of work P and Q can do in 1 day = 1/15 + 1/20 = 7/60
   Amount of work P and Q can together do in 4 days = 4 × (7/60) = 7/15
   Fraction of work left = 1 – 7/15= 8/15
   
   
    
Directions(6-10): Find the missing term '?' of the following series.


6. 53,61,81,?,157,213
   110
   111
   115
   112
   113
   Option E
   +8,+20,+32,+44,+56
   ? = 113
   
   
    



7. 472.5,,?,105,60,40,32
   225
   200
   245
   233
   210
   Option E
   /2.25,/2,/1.75,/1.5,/1.25
   ? = 210
   
   
    



8. 33,34,70,213,856,?
   4215
   4285
   4000
   4300
   4141
   Option B
   *1+1
   *2+2
   *3+3
   *4+4
   *5+5
   ? = 4285
   
   
    



9. 23,38,68,113,?,248
   155
   148
   162
   181
   173
   Option E
   +15*1
   +15*2
   +15*3
   +15*4
   +15*5
   ? = 173
   
   
    



10. 250,249,241,214,?,25
    100
    115
    150
    120
    125
    Option C
    -1^3,-2^3,-3^3,-4^3,-5^3
    ? = 150