By selling 8 items, a shopkeeper gains the selling price of 2 items. The gain percentage of the shopkeeper is:
Zeenat earns 20% on an investment, but she loses 10% on another investment. If the two investments are respectively in the ratio of 3 : 5, then what is the percentage gain or loss for Zeenat on the two investments taken together?
An athlete crosses a 3000 m distance in 10 minutes. What is his speed (in km/h)?
The diameter of the base of a right circular cylinder is 36 cm and its height is 21 cm. Find the volume of the cylinder. \(\text{(use } \pi = \frac{22}{7}\text{)}\)
₹66,000 is to be divided amongst Asha, Bhupinder and Gargi in such a way that the ratio of their shares is to be:
Asha : Bhupinder = 9 : 5 and Bhupinder : Gargi = 2 : 1. How much should Asha get?
The table below shows the marks obtained by students A, B and C in French and Geography in an examination.
The maximum marks for each subject are 100. Study the table carefully and answer the question that follows.
| Student | French | Geography |
| A | 98 | 100 |
| B | 89 | 98 |
| C | 92 | 99 |
What is the ratio of the average marks of the three students in Geography to that in French?
A contractor reduces the working time of a week (Monday to Saturday) from 48 hours to 36 hours for his workers without changing the payment. What is the percentage increase in the hourly rate?
\(30\tfrac{1}{3}\%\)
\(33\tfrac{1}{3}\%\)
\(67\tfrac{2}{3}\%\)
\(70\tfrac{2}{3}\%\)
The length of the median of an equilateral triangle is \(6\sqrt{3}\ \text{cm}\). The area of the triangle is:
\(36\sqrt{3}\ \text{cm}^2\)
\(36\ \text{cm}^2\)
\(72\ \text{cm}^2\)
\(72\sqrt{3}\ \text{cm}^2\)