(cos5°+sin5°)/(cos5°-sin5°) Divide the numerator and denominator by cos5° = (1+tan5°)/(1-tan5°) = (tan 45° + tan5°)/(1-tan45° ×tan 5° ){As tan (A + B) = (tanA°+tanB°)/(1-tanA°+tanB°) } = tan (45 + 5) = tan 50°
Number of faculties in Physics and Biology in an institute is in the ratio of 2:3 respectively. If 60 more faculties join Physics, while 32 more faculti...
A school has 600 students. The ratio of boys to girls is 3:2. If 40 new boys join the school, what will be the new ratio of boys to girls in the school?
A classroom has a ratio of male to female students as 2:3. If 4 male and 6 female students join, the ratio of female to male students becomes 5:3. Find ...
The population of Tigers is decreased by a certain rate of Interest (Compounded annually). If the current population of Tigers be 11520 and the ratio of...
The ratio of the ages of A and B is 3:5. If the difference between their ages is 10 years, what is the sum of their ages?
₹ 6,900 is divided between L, M and N in the ratio of 6: 8: 9. If 'L' and 'M' each gave ₹ 300 to N then the new ratio of shares of L, M and N is:
A fruit seller sells apples at a profit of 20% and oranges at a loss of 10%. If the ratio of apples to oranges sold is 3:2 and the overall profit is rup...
The ratio of the monthly incomes of A and B is 11: 13 and the ratio of their expenditures is 9: 11. If both of them manage to save ₹4,000 per month, t...
There are 15 numbers such that average of first 12 numbers is 30 while the average of last five numbers is 50. Find the 12th number, if the ratio betwee...
A boy is supposed to distribute Rs.2400 among his three friends P, Q and R in the ratio of 5:3:4 respectively, but mistakenly he distributed in the rati...
