Conversion of ammonium ion to nitrite ion is done by nitrosomonas during nitrification.
There are 70 rupees in a box which contains coins of 1 rupee, 50 paise, and 25 paise. If the number of 50 paise coins is 2 times the number of 25 paise ...
In a college the ratio of boys and girls are in the ratio 6:7. 60% girls and 25% boys were absent. Find the girls present if the total number of student...
The value of 'A' is directly proportional to the value of 'B'. When 'A' equals 25, 'B' is 40. Using this relationship, determine the value of 'A' when ...
Rs 1215 is divided among 6 men, 5 women and 3 boys so that the share of a man, a woman and a boy may be in the ratio of 5:6:7. What is the share ...
The sum of the first, second, and third numbers is 231. The first and second numbers are in a 3:5 ratio, and the second and third...
Average run per wicket of a bowler is 11.5. In his next innings bowler took 5 wickets and conceded 40 runs, thereby he reduced his bowling average by 0....
A toy seller has white, pink, and blue balls in the ratio 3:7:11. The number of pink balls is more than the number of white balls by a number which is a...
P, Q and R together started a business. Seven times the investment of P equals nine times the investment of Q and the capital of Q is twice that of R. F...
A sum of money is divided among P, Q, R and S in the ratio of 1:2:6:7 respectively. If the share of R's is Rs. 2860 more than the share of Q, then what ...
