The ratio of present ages of P and Q is 3:4. The ratio of their ages 27 years hence would be 6:7. If P is 9 years younger than Q then, what would be the present age of Q?

B starts 4 minutes after A from the same point, for a place at a distance of 7 miles from the starting point. A on reaching the destination turns back and walks a mile where he meets B. If A's speed is a mile in 8 minutes then B's speed is a mile in ____ minutes.

What is the height (in cm) of an equilateral triangle whose each side is 8 cm?

Directions : A bar graph showing the heights of six mountain peaks is given below. Study the bar graph and answer the questions. 

What is the respective ratio of the heights of the highest peak and the lowest peak? 

Direction: Study the information given below carefully and answer the questions given below.
Three companies A, B and C manufactured two types of bottles viz Steel and Copper. Total number of bottles manufactured by the company is 1000. The ratio between the number of copper bottles manufactured by A and the number of Steel bottles manufactured by B is 13: 17. The total number of Copper bottles manufactured by C is 164. The number of Copper bottles manufactured by B is 25 more than the same type of bottles manufactured by A. The 14.28 % of the number of Copper bottles manufactured by B is equal to the 1/9th of the total number of Steel bottles manufactured by C. The number of Steel bottles manufactured by A is 122 which is 21 less than the number of Copper bottles manufactured by the same company.

Find the difference between the total number of steel and copper bottles manufactured by all the shops.

 A retailer purchase 40 pens at the cost price of 36 pens from a wholeseller . If he sells all of them at a discount of 1 %, then what is his profit percent? 

A student multiplies a number by 5/3 instead of 3/5. What is the percentage error in the calculation?

An article is sold for Rs. 1,260 after giving a discount of 40%. What is the marked priced of this article?