Instructions

For the following questions answer them individually

Question 11

A sum of money invested at simple interest becomes $$\frac{13}{10}$$ of itself in 2 years and 6 months. What is the rate (in percentage) of interest per annum?

Question 12

The ratio of the cost price and selling price of an article is 5 : 3. What is the loss percentage?

Question 13

A shopkeeper offers the following 3 schemes. Which scheme has the maximum discount percentage?

I. Two successive discounts of 30% and 20%

II. Buy 4 get 7

III. Buy 4 get 3 free

Question 15

12 men or 30 boys can complete a work in 72 days. How many days will 48 men and 24 boys will take to complete the same work?

Question 16

A train starts moving from a place P at 10:00 a.m. and arrives at another place Q at 5:30 p.m. on the same day. If the speed of the train is 50 km/hr, then what will be the distance (in km) covered by the train?

Instructions

The bar graph shows 1 month's sales figures of different brands of washing machines of a certain electronics store in Rs 1000s. Study the diagram and answer the following questions.

Question 20

If the sales ﬁgures are exclusive of tax then at the rate of 18% tax how much is the tax to be paid (in Rs) on the sales of all the 7 brands of washing machines?