Objective Type Questions
Question 1:
25 as a percent is
(a) 30%
(b) 35%
(c) 40%
(d) 45%
Answer 1:
25=25×100100 =40100 =40%
Hence, the correct option is (c).
25 as a percent is
(a) 30%
(b) 35%
(c) 40%
(d) 45%
25=25×100100 =40100 =40%
Hence, the correct option is (c).
54 as a percent is
(a) 80%
(b) 125%
(c) 120%
(d) 130%
54=54×100100 =5×25100 =125100 =125%
Hence, the correct option is (b).
The ratio 3 : 5 as a percent is
(a) 60%
(b) 50%
(c) 40%
(d) 80%
35=35×100100 =3×20100 =60100 =60%
Hence, the correct option is (a).
12% as a fraction is
(a) 325
(b) 425
(c) 320
(d) 625
12%=12100 =12÷4100÷4 =325
Hence, the correct option is (a).
114% as a fraction is
(a) 140
(b) 160
(c) 180
(d) 170
114%=54% =54×1100 =14×20 =180
Hence, the correct option is (c).
Which of the following fractions is equivalent to 25% ?
(a) 14
(b) 15
(c) 13
(d) 12
25%=25100 =25÷25100÷25 =14
Hence, the correct option is (a).
If 25% of x is 100, then x =
(a) 100
(b) 200
(c) 300
(d) 400
25% of x=100⇒25100×x=100⇒x4=100⇒4×x4=4×100⇒x=400
Hence, the correct option is (d).
If 8% of a number is 6, then the number is
(a) 96
(b) 60
(c) 96
(d) 75
Let the required number be x.
8% of x=6⇒8100×x=6⇒2x25=6⇒2x×2525=6×25⇒2x=150⇒x=1502⇒x=75
Hence, the correct option is (d).
If x% of 75 is 12, then x =
(a) 8
(b) 10
(c) 12
(d) 16
Let the required number be x.
x% of 75=12⇒x100×75=12⇒3x4=12⇒3x×44=12×4⇒3x=48⇒x=483⇒x=16
Hence, the correct option is (d).
If 56 of 29% of x is 29, then x =
(a) 290
(b) 58
(c) 120
(d) 100
Let the required number be x.
56 of 29% of x=29⇒56(29100×x)=29⇒29x120=29⇒29x=29×120⇒x=29×12029⇒x=120
Hence, the correct option is (c).
What percent of 27 is 135?
(a) 25%
(b) 20%
(c) 15%
(d) 10%
Let the required number be x.
x% of 27=135⇒x100×27=135⇒x350=135⇒350×x350=1×35035⇒x=35035⇒x=10
Hence, the correct option is (d).
If x = 100, then 120% of x is
(a) 125
(b) 115
(c) 120
(d) 110
120% of x = 120100×100=120
Hence, the correct option is (c).
40% of 150 + 60% of 150 =
(a) 200
(b) 150
(c) 250
(d) 180
40% of 150=40100×150 =6060% of 150=60100×150 =90
Therefore, 40% of 150 + 60% of 150 = 60 + 90 = 150.
Hence, the correct option is (b).
50% of 150 + 70% of 300 =
(a) 295
(b) 285
(c) 265
(d) 275
50% of 150=50100×150 =7570% of 300=70100×300 =210
Therefore, 50% of 150 + 70% of 300 = 75 + 210 = 285.
Hence, the correct option is (b).
55% of 1000 ÷ 60% of 2000 =
(a) 1124
(b) 1225
(c) 1324
(d) 1425
55% of 1000=55100×1000 =55060% of 2000=60100×2000 =1200Therefore, 55% of 1000÷60% of 2000=5501200=550÷501200÷50=1124.
Hence, the correct option is (a).
If x% of 2000 = 600, then x =
(a) 60
(b) 30
(c) 40
(d) 50
x% of 2000=600⇒x100×2000=600⇒20x=600⇒x=60020⇒x=30
Hence, the correct option is (b).
If x% of 125 is 1825, then x =
(a) 30
(b) 40
(c) 72
(d) 50
x% of 125=1825⇒x100×125=1825⇒12x×500500=18×50025⇒12x=18×20⇒x=18×2012⇒x=30
Hence, the correct option is (a).
The value of 30% of 60% of 200 is
(a) 23
(b) 24
(c) 18
(d) 36
60% of 200=60100×200 =12030% of 60% of 200=30100×120 =36
Hence, the correct option is (d).
If 25 of 50% of x is 10,then x =
(a) 100
(b) 50
(c) 25
(d) 80
25of 50% of x=10⇒25×50100×x=10⇒x5=10⇒x×55=10×5⇒x=50
Hence, the correct option is (b).
If 47 of 49% of x is 21,then x =
(a) 125
(b) 98
(c) 84
(d) 75
47 of 49% of x=21⇒47×49100×x=21⇒7x25=21⇒7x×2525=21×25⇒x=21×257⇒x=75
Hence, the correct option is (d).
Which of the following fractions is equivalent to 12.5% ?
(a) 18
(b) 16
(c) 15
(d) 112
12.5%=12.5100 =1251000 =125÷251000÷25 =540 =5÷540÷5 =18
Hence, the correct option is (a).
Ravish saved 55% of his income. If his income is ₹11000, then his expenditure is
(a) ₹6050
(b) ₹7450
(c) ₹4950
(d) ₹3550
Savings of Ravish = 55% of ₹11000
Expenditures of Ravish = 45% of ₹11000
= 45100×11000
= ₹4950
Hence, the correct option is (c).
If 35% of a number added to 39 is the number itself, the number is
(a) 60
(b) 65
(c) 75
(d) 105
Let the required number be x.
According to the question,
35% of x+39=x⇒35100×x+39=x⇒35x×100100=(x-39)×100⇒35x=100x-3900⇒100x-35x=3900⇒65x=3900⇒x=390065⇒x=60
Hence, the correct option is (a).
On increasing the salary of a man by 25%, it becomes ₹20,000. What was his original salary?
(a) ₹15000
(b) ₹16000
(c) ₹18000
(d) ₹25000
Let the original salary of the man be x.
According to the question,
x+25% of x=20000⇒x+25100×x=20000⇒x+x4=20000⇒4x+44=20000⇒5x4×4=20000×4⇒5x=80000⇒x=800005⇒x=16000
Therefore, Original salary of the man is ₹16000.
Hence, the correct option is (b).
Rohit scored 180 marks in the first test and 150 marks in the second test. The maximum marks in each test is 200. What is the decrease in his performance in percentage points?
(a) 20%
(b) 15%
(c) 25%
(d) 23%
Marks scored in first test = 180
Marks scored in second test = 150
Maximum marks = 200
Decrease in marks = 180 − 150 = 30
Decrease in performance in percentage = 30200×100=15%
Hence, the correct option is (b).
No comments:
Post a Comment