SSC CGL 201631)In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is
60
SSC CGL 202032)A and B spend 60% and 75% of their incomes, respectively. If the savings of A are 20% more than that of B. then by what percentage is the income of A less than the income of B?
25
Let the income of A and B be X and Y respectively.
Saving of A = \(X - \frac{60}{100} \times X\) = 0.4X;
Saving of B = \(Y - \frac{75}{100} \times Y = 0.25Y\);
If the savings of A are 20% more than that of B then,
Saving of A = \(0.25Y \times \frac{120}{100} = 3Y/10\); ⇒ 0.4X = 3Y/10; ⇒ 4X = 3Y;
Ratio of income of A and B = 3 : 4 ;
Required percentage = \(\frac{(4 - 3)}{4} \times100\) = 25%
SSC CGL 202033)In an examination in which the full marks were 500, A scored 25% more marks than B, B scored 60% more marks than C and C scored 20% less marks than D. If A scored 80% marks, then the percentage of marks obtained by D is :
50%
Let D's marks be x. C's marks = 80% of x = \({4x\over5}\) ;
B's marks = 160% of \({4x\over5}\) = \(32x\over25\) ;
A' marks = 125% of \(32x\over25\) = \(8x\over5\) ;
According to the question : \({8x\over5}=\) 80% of 500 ; ⇒ x = 250 ;
Required percent = \({250\over500}\times100\) = 50%
SSC CHSL 202134)Geeta scored 30% and failed by 50 marks, while Sandeep who scored 45% marks, got 25 marks more than the minimum marks required to pass the examination. How many marks did Vimal get if he scored 64% marks ?
320
SSC CHSL 202135)What is the value of x, if 25% of 480 + 30% of 500 + x% of 90 = 35% of 900?
50
SSC CHSL 202136)Raghav spends 80% of his income. If his income increases by 12% and his expenditure increases by 17.5%, then what is the percentage decrease in his savings?
10%
SSC CHSL 202137)Rita spends 25% of her monthly income on house rent and 30% of the remaining income on food. If she saves Rs. 5,250, what is her monthly income?
Rs. 10,000
SSC CHSL 202138)In a survey, it was found that in a constituency, 55% of voters are male and the rest are female. 40% of the male voters are literate and \(33\frac{1}{3}\%\) of the female voters are illiterate. What percentage of the voters are literate?
52%
SSC CHSL 202139)In an examination of 180 marks of a subject, 75% marks are allocated for theory and the rest for project work. Veena scored 60% in theory. What percentage of marks must she score in the project to achieve an overall 62% marks in the subject?
68
SSC CHSL 202140)In a class, 60% of the students are girls and the rest are boys. 45% of the girls pass an examination and 40% of the boys failed. If the number of girls who failed is 66, the number of boys who passed the examination is:
48