Quantitative Aptitude - Arithmetic Ability Questions

A and B together can complete a piece of work in 12 days. They worked together for 5 days and then A alone finished the rest work in 14 days. A alone can complete the work in _____.

The average of 19 consecutive even integers is 50. The highest of these integers is

Cost price of 28 articles is equal to Sale price of 21 articles, then percentage of profit is

A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?

2 litre of pure alcohol is added to 6 litre, 40% alcohol solution. The percentage of water in the solution is _____ .

In a class, 60% of children like Mathematics, 45% like Science and 25% like both Mathematics and Science. What is the percentage of children who like at least one subject?

What is the sum of a3+b3+c3-3abc, when the value of a=4, b=2 and c=-6?

Consider the figure shown below which consists of the triangle ABC which touches the circle with centre at O. Which of the following options is CORRECT?