Question
The average presence of students of a class in a College
on Monday, Tuesday and Wednesday is 32 and on the Wednesday, Thursday, Friday and Saturday is 30. If the average number of students on all the six days is 26 then the number of students who attended the class on Wednesday is?Solution
ATQ, we can say that Sum of the presence of students on Monday, Tuesday and Wednesday = 3 × 32 = 96 Sum of the presence of students on Wednesday, Thursday, Friday and Saturday = 4 × 30 = 120 Sum of the presence of students of all six days is = 6 × 26 = 156 ∴ Presence of students on Wednesday = (96 + 120) – 156 = 60
Monthly income of P is Rs.12000 and his monthly savings is Rs.6500. If his monthly income is decreased by 25% and monthly expenditure is decreased by 20...
A company allowed 9% commission on the total sales made by the salesman and a bonus of 1% on the sales over Rs. 40000. If the salesman deposited Rs. 81...
A company’s revenue increased by 20% in the first year and by 10% in the second year. If the revenue at the beginning of the first year was ₹1,00,00...
Deepak managed to get 27% in his test and still needed 39 marks to pass. Ramesh got 42% and went 33 marks above the required marks. Find the total passi...
In an examination, a student who scores 25% of the maximum marks fails by 15 marks. Another student who scores 35% of the maximum marks gets 25 marks mo...
Income of A is twice the income of B. B and A spend 50% and 60% respectively of their incomes. Find the savings of A, if B saves Rs. 12000 in a month.
The total strength of school A is 20% more than that of school B. In school A and B, out of total number of students, 30% and 40% respectively are girls...
The number of boys and girls in a school is 120 and 200 respectively. 25% of boys left the school while 40 girls took admission in the school. Find the ...
- The population of a town increased by 10% in the first year, then again by 15% in the second year, and decreased by 20% in the third year. If the populatio...
Out of his total income, Amit spent 30% on groceries, 20% on rent and 10% on electricity bills. If he spent 20% of the remaining on entertainment and sa...
Relevant for Exams:
