For the following questions answer them individually
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?
The ratio of the cost price and selling price of an article is 5 : 3. What is the loss percentage?
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
If $$4^x= \sqrt[7]{1024}$$, then what is the value of X ?
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?
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?
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.
Sales of which washing machine brand were the second highest?
What is the ratio of sales of brand G to that of brand A?
Sales of brand D was greater than that of brand B by ________.
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?