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Let the number of questions solved correctly be x Number of questions solved wrongly = y Number of questions left not attempted =z `x+y+z=200` …………… (i) `4x-2y-z=80` …………… (ii) Adding eq (i) and (ii), we get x = `(280+y)/5` Only, y = 120, will give an integer value of x .
Aryan, Bhavya, and Chetan initiated a venture with initial investments of Rs. 50,000, Rs. 60,000, and Rs. 72,000 respectively. After six months, Aryan, ...
Calculate the value of 'R' if 30% of 'R' equals 40% of Rs. 4,500.
The marks scored by a boy in three subjects are in the ratio 2 : 3 : 5. Boy scored an overall aggregate of 60% in the exam. If the maximum marks in each...
The price of a commodity rises by 20% in the first year and an additional 15% in the second year. If the initial price was ₹2,000, what will be its pr...
The marks obtained by A is 25% more than B, and the marks obtained by C is 140 more than the difference of the marks obtained by A and B. If C obtained ...
A salesman is allowed 12% commission on the total sales by him and a bonus of 1% on the sales over Rs. 10000. If the total earnings of a salesman is Rs....
In each population, 30% of the population is affected with asthma out of which 90% of asthma patients used to work in flour mills. If 30% of the total p...
0.5 is what percentage of 20?
In an examination, 4 marks are given for each correct answer and 1 mark is deducted for each wrong answer. If a candidate solved 75 questions and got 12...
A man spends 72% of his income. If his income increases by 28% and his expenditure increases by 25%, then what is the percentage increase or decrease in...
