An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is :

The value of a machine is Rs. 6250. It decreases by 10% during the first year, 20% during the second year and 30% during…

What percentage of the whole week does Ajay spend in office, if his office hours are 9 am to 5 pm from Monday to Friday …

In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is $$\frac{2}…

A line of length 1.5 metres was measured as 1.55 metres by mistakes. What will be the value of error percent ?

In a class of 65 students and 4 teachers, each student got sweet that are 20% of the total number of students and each t…

The difference of two numbers is 20% of the larger number. If the smaller number is 20, then the larger number is :

In an examination, 93% of students passed and 259 failed. The total number of students appearing at the examination was …