Question
The average number of books of Biology, Chemistry and
Physics in a book shop is 360. Biology books are 180 more than the average number of Chemistry and Physics books. The number of Physics books is 180 less than the average number of Biology and Chemistry books. What is the number of chemistry books in the shop?Solution
: Let the number of biology, chemistry and physics books be B, C and P. B+C+P =360×3=1080 B+C+P=1080   … (1) Biology books =180+Average number of (C and P) B=180+(C+P)/2 2B=360+C+P 2B-C-P=360     … (2) Physics books =Average of (B+C)/2 -180 P=B+C)/2 -180 2P=B+C-360 B+C-2P=360    … (3) Adding Equation (1) and (3) and subtracting (2) ... (B+C+P) + B+C-2P -2B+C+P=1080+360-360 3C=1080 C=360.
The environment impact assessment consists of a mimber of steps with each step equally important in determining the overall performance of the project. ...
Where are the headquarters of RBI located?
In which year was the Khalsa tradition initiated?
Which was the largest of the numerous native states before independence?
When the branch of a tree is shaken violently, the leaves fall. This happening can be explained by:Â
A government budget shows a primary deficit of ₹6,900 crore. The revenue expenditure on interest payment is ₹400 crore. Fiscal deficit is equal to:
The Bara Imambara in Lucknow was built in the year 1784 by ________.
Which of the following is the Largest Cricket Stadium in the world?
Who was the first Indian to become a Nobel Laureate?
ASBA is an application containing an authorization to Self-Certified Syndicate Bank. What does B stand for in ASBA?
Relevant for Exams:
