A man buys 12 articles for Rs. 12 /- and sells them at the rate of Rs.1.25 per article. His gain percentage is: 

If the HCF and LCM of 5x and 8x are 9 and 360 respectively, find value of x. 

A, B, and C started a business. A invest 3,20,000 for 4 months and B invest 5.10,000 for 3 months and C invest 2,70,000 for 5 months. If the end of the year they get total profit of Rs. 1,24,800. Then find the share of B?

A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?

Directions: The bar graph given below shows the spending of family income on various items and savings during 1993. Observe the graph and answer the following questions:

If the total income of the family during 1993 was ₹ 100000, the savings of the family in 1993 was: 

Find the shaded area in the given figure. If each circle having radius of 7cm?

Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these metals be mixed so that the mixture may be 15 times as heavy as water?