Aman and Raman together can complete a work in 30 days, Raman and Manan can complete the same work in 36 days and Manan and Aman can complete the same work in 45 days. In how many days can all three together complete the work?

By selling an article for ₹72, there is a loss of 10%. At what price it should be sell to gain 10% profit?

If one of the equal angles of an isosceles triangle is 65°, then the angle at the vertex is

Directions: Read the below data carefully and answer the following questions.
The table shows the total number of ice cream (Chocobar + Cornetto) was given by Santa Claus on the day of Xmas to 5 children. It also shows the number of Chocobar ice-creams is how much more or less percentage of the total number of Cornetto ice-creams.

Find the ratio between the total number of Chocobars Arun, Kiran and Rumi have and the total number of Cornetto Barun and Sonal have.

Table below shows the number of candidates appearing for the interview and the percentage of candidates found eligible for the post in various companies (A, B, C, D, E, F).
Study the Tables and give answer the following Questions.

How many qualified candidates are there in Company D?

P, Q and R gets a total wage of Rs.3600 if they work together. P and Q gets a total wage of Rs. 2800 if they work together and P alone gets Rs.1600. Find the efficiency ratio of P, Q and R  

If the ratio of the heights of two identical triangles is 4: 9, find the ratio of the areas of the two triangles.

The HCF of two numbers is 21 and their LCM is 840. If one of the numbers is 49, then the other number is: