Mixed Quantitative Aptitude Questions Set 170

Directions(1-5): What approximate value will come in place of question mark '?' in the following questions.

1. (1224)^1/2 + (485)^1/2 = ?*(360.98)^1/2
   4
   5
   6
   3
   7
   Option D
   (1224)^1/2 + (485)^1/2 = ?*(360.98)^1/2
   =>(1225)^1/2 + (484)^1/2 = ?*(361)^1/2
   =>35 +22 = ?+19
   =>? = 3
   
   
    



2. (220.82 – 149.21)/(19.9% of 89) = ?
   5
   6
   8
   7
   4
   Option E
   (220.82 – 149.21)/(19.9% of 89) = ?
   =>(221 - 149)/(20% of 90) = ?
   =>? = 72/18
   =>? = 4
   
   
    



3. (784.1 + 511.9 – 100.01)/3.99 = ?
   285
   300
   320
   410
   451
   Option B
   (784.1 + 511.9 – 100.01)/3.99 = ?
   =>(784 + 512 - 100)/4 = ?
   =>? = 1196/4
   =>? = 300
   
   
    



4. 59.980% of 599.98 + 34.99% of 499.99 = ?
   500
   320
   440
   535
   480
   Option D
   59.980% of 599.98 + 34.99% of 499.99 = ?
   =>60% of 600 + 35% of 500 = ?
   =>? = 360+175
   =>? = 535
   
   
    



5. 11.84*125.12/5.008+799.9 = ?
   1200
   1300
   1100
   1400
   1000
   Option C
   11.84*125.12/5.008+799.9 = ?
   =>12*125/5+800 = ?
   =>300+800 = ?
   =>? = 1100
   
   
    



6. Two alloys contain 40% and 35% of gold in it resp. If 24kg of first type alloy is mixed with 16 kg of second type of alloy then find the percentage of gold in the resulting mixture.
   49%
   44%
   38%
   40%
   30%
   Option C
   First alloy quantity = 0.4*24 = 9.6 kg
   Second alloy quantity = 0.35*16 = 5.6 kg
   % of gold in resulting mixture = {(9.6+5.6)/(24+16)}*100 = 38%
   
   
    



7. The monthly incomes of Ram and Shyam is 14:15 resp. and their monthly expenditure is Rs.4600 and Rs.4500 resp. If saving of Shyam is 12.5% more than the savings of Ram. Find the monthly income of Shyam.
   Rs.13500
   Rs.13300
   Rs.15000
   Rs.12000
   Rs.11200
   Option A
   (14x - 4600)/(15x - 4500) = 8/9
   =>x = 900
   Monthly income of Shyam = 15*900 = Rs.13500
   
   
    



8. A man travelled certain distance in three equal parts with different speeds of 12 km/hr., 16km/hr. and 20km/hr. resp. Find his average speed for the overall journey.
   11.02 km/hr.
   17.17 km/hr.
   18.84 km/hr.
   15.32 km/hr.
   10.21 km/hr.
   Option D
   Total time taken by the man = [x/12 + x/16 + x/20]
   Average speed = 3x/[ x/12 + x/16 + x/20] = 15.32 km/hr.
   
   
    



9. A man invested Rs.20000 at simple interest for 2 years at the rate of r% and gets an interest of Rs.2000. If he invested total amount (Principal and interest) in a scheme offering simple interest at the rate of (r+3)%. Find the total interest obtained by the man from scheme after 2 years?
   Rs.3450
   Rs.3245
   Rs.3520
   Rs.3151
   Rs.3320
   Option C
   Interest for one year = 2000/2 = Rs.1000
   Rate = 1000/20000*100 = 5%
   Interest earned = 22000*8%*2 = Rs.3520
   
   
    



10. Two dices are thrown, find the probability of getting an even number after multiplying numbers obtained from each dice.
    1/2
    3/4
    4/7
    7/9
    5/7
    Option B
    Probability = ½*1/2+1/2*1/2+1/2*1/2
    = ¾