1. An orange vendor makes a profit of 20% by selling oranges at certain price. If he charges Rs.1.2 higher per orange he would gain 40%. Find the original price at which he sold an orange.
a) RS. 5.6
b) Rs. 7.2
c) Rs. 4.8
d) Rs. 8
e) None of these
Solution - Let x be the C.P. of an orange.
A/Q - the profit double itself if vendor charges Rs. 1.2
more..
X*20% = 1.2
X = 6
i.e. S.P. = 6 + 20% = 7.2
2. If difference between CI and SI on a certain sum of money is Rs. 72 at 12% p.a. for 2 years then find the amount.
a) RS.6000
b) Rs.5000
c) Rs. 5200
d) Rs. 4900
e) None of these
Solution: - CI – SI for 2years = p(r/100) ^2
3. Rs. 3000 is distributed among A,B and C such that A gets 2/3rd of what B and C together gets and C gets ½ of what A and B together gets. Find C’s share.
a) Rs.750
b) Rs. 1000
c) Rs. 800
d) Rs. 1200
e) None of these
Solution = - 2A = 3(B+c) –(1)
2C = B+A –(2)
A+b+c = 3000
4. 8 men can do a piece of work in 12 days while 20 women can do it in 10 days. In how many days 12 men and 15 women complete the same work.
a) 4
b) 5
c) 6
d) 7
e) 8
Solution :- 8 men – 12 days => 1 man – 12*8 => 12 men
-> 8days
Similarly ,20 woman 10 days => 15 woman -> 200/15days
Total work done in 1 day = 1/8 +15/200
= 1/5
Total work done in 5 days
5. A fair coin is toss repeatedly. If head appears on first 4 tosses then what is probability of appearance of tail in fifth toss
a)1/5
b) 2/5
c) ½
d) 4/5
e) None
Solution ; - ½.. independent from last 4 toss
6. Walking at ¾ of his usual speed a man is 16 min late for his office. the usual time taken by him to cover that distance is
a) 48 minutes
b) 60 minutes
c) 42 minutes
d) 62 minutes
e) None
Solution -
7. A, B and C can do a work in 24, 32 and 60 days respectively. They start working together. A left after 6 days B left after 8 days. how many more days are required to complete the whole work?
a) 30
b) 25
c) 22
d) 20
e) None of these
Solution : - in 6 day A did his 25% of work similarly B did
his 25% of work in 8 days
So left work 50%
C can do 50%of his work in 30 days.. so required days- 30-8
= 22
8. The price of 2 oranges, 3 bananas and 4 apples is Rs. 15. The price of 3 oranges, 2 bananas and 1 apple is Rs. 10. What will be price of 3 oranges, 3 bananas and 3 apples?
a) Rs. 10
b) Rs. 8
c) Rs. 15
d) Can’t be determined
e) None of these
Solution-- add both the equation..
9. The difference between the time taken by two cars to travel a distance of 350 km is 2 hours 20 minutes. If the difference between their speeds is 5 km/hr., what is the speed of faster car in km/hr.?
a) 30
b) 35
c) 40
d) 45
e) 50
10. The sum of circumference of a circle and perimeter of a square is 210 cm. The diameter of the circle is 21cm. What is the sum of area of circle and square?
a) 1158.4 sq. cm
b) 1058.2 sq. cm
c) 1642.5 sq. cm
d) Can’t be determined
e) None of these
Solution :- pi*d + a*a = 210
0 comments:
Post a Comment