Hello Aspirants. Welcome to Online Quantitative Aptitude Section Section with explanation in **AffairsCloud.com.** Here we are creating Best question samples from **Percentage** with explanation, which is common for competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

**From the salary, Akilesh spent 15% for house rent, 5% for children’s education and 15% for Entertainment. Now he left with Rs.13,000. His salary is**

A)19,000

B)20,000

C)18,000

D)15,000

**B)20,000**

Explanation :

10+15+10 = 35%

100-35 = 65% = 13,000

100% = 100*13000/65 = 20,000

**In a School, 40% of the students are female and thus the no of boys exceed the no of girls by 40.Find the total no of students.**

A)190

B)100

C)200

D)180

**C)200**

Explanation :

60x -40x = 40

X = 40/20 = 2

100*2 = 200

**In an examination 30% of the students failed in Science, 45% of the students failed in Maths and 25% of the students failed in both subjects. Find the % of the students passed ?**

A)60%

B)30%

C)45%

D)50%

**D)50%**

Explanation :

% of students failed = 30+45-25 = 50%

% of students passed = 100-50 = 50%

**In an examination Ammu scored 56% marks, Saran scored 90% marks and Rima scored 650 marks that is 65% then find the total marks of three students ?**

A)2110

B)1250

C)2450

D)2010

**A)2110**

Explanation :

95% = 650

100% = 100*650/65 = 1000

56% = 560

90% = 900

Total = 650+560+900 = 2110

**The salary of a workers increased by 15% and decreased by 7%, What % change rises in his salary ?**

A)10%

B)7%

C)5%

D)8%

**B)7%**

Formula : x-y-(xy/100)

Explanation :% = 15 -7 – [(15*7)/100] = (800 – 105)/100 = 6.95 = 7%

**The population of a village is decreased by 12% and 10% in 2 successive years. What % population is decreased after 2 years ?**

A)18.4%

B)30.6%

C)20.8%

D)23.5%

**C)20.8%**

Explanation :

% = -12 -10 + (-12*-10)/100

= (-2200 + 120)/100

= – 2080/100 = -20.8%

**In an examination, 30% of the maximum marks required to pass. A student get 120marks and failed by 90marks. Find the maximum marks**

A)800

B)720

C)650

D)700

**D)700**

Explanation :

30x/100 = 120+90 = 210

X = 210*100/30 = 700

**P’s income is 20% more than Q’s income. How much % Q’s income less than P’s income ?**

A)18.54%

B)16.67%

C)17.76%

D)15.75%

**B)16.67%**

Explanation :

B income = 100

A income = 100*120/100 = 120

% = (120-100/120)*100 = 16.67%

**The price of rice is increased by 15%. The percentage of reduction that a family should effect in that use of rice, so as not to increase the expenditure is**

A)13%

B)10%

C)15%

D)17%

**A)13%**

Formula : x*100/x+100

Explanation :Reduction % = 15*100/100+15 = 1500/11513.04 = 13%

**The value of commodity depreciated 20% annually. If the value of commodity 3yrs ago was Rs.10,500,Find it’s present value ?**

A)3678

B)5700

C)4567

D)5376

**D)5376**

Explanation :

Present value = 10,500*80*80*80/100*100*100

= 10500*8*8*8/1000

= 5376

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