The salary of a typist was at first raised by 10% and then the same was reduced by 5%. If he presently draws Rs.1045.What was his original salary?
Correct answer: C. 1000
- A. 900
- B. 950
- C. 1000
- D. 975
Explanation
The two changes multiply, so the present salary is 100% x 1.10 x 0.95 = 104.5% of the original salary. Therefore, original salary = 1045 rupees / 1.045 = 1000 rupees. The likely mistake is treating the net change as 10% - 5% = 5% and choosing 950 rupees.
Last updated
About Percentages
Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
Practise Arithmetic
1,060 free Arithmetic MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Mathematics questions like this
Mathematics is on 67 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
10 % of the electorate did not cast their votes in an election between two candidates. 10 % of the votes polled were found invalid. The successful candidate got 54 % of the valid votes and won by a majority of 1620 votes. The number of voters enrolled on the voter's list was___________?
12.5 + 10 1/4 of 100 ÷ 10% of 10 = ____________?
16.66% of 33.33% of 66.66% of ? = 30
20% of 40 + ? % of 80 = 120
25% of 30% of 45% is equal to__________?