Question
The university has 750 faculty (male and female only)
out of which the females are 60%. The average height of females is 162 cm and that of males is 168 cm. What is the average height of the faculty (in cm) of the university?Solution
Total faculty: 750 Percentage of females: 60% Number of females = 60 /100 x 750 =450 Number of males = 750-450 = 300 Average height of females = 162 cm Average height of males = 168 cm The average height of all faculty members: Average height = [(450x162) + (300 × 168)]/ 750 = [72900+50400]/750 =123300/750 =164.4cm.
The ratio of the two numbers is 7:15. 120% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
The current heights of A, B, and C are in the ratio of 10:12:15. After one year, the height of A increases by 20%, the height of B increases by 33(1/3)%...
A stone worth Rs.3800 drops and breaks with weight in the ratio 2:3:5. The price of stone is directly proportional to square of its weight. Find the tot...
A sum of money is divided among P, Q, R and S in the ratio of 5:6:10:11 respectively. If the share of R's is Rs. 2440 more than the share of Q, then wha...
Rs 11,550 has to be divided between X, Y & Z such that X gets 4/5 of what Y gets and Y gets 2/3 of what Z gets. How much more does Z get over X (in Rs)?
A plot has to be divided among P, Q and R in the ratio 2:5:8 respectively. If the area of plot received by R is 4200m² more than the area of plot recei...
In an office, the ratio of the number of males to number of females is 7:3. If 2 males joined the class and 5 females left the class, then the ratio of ...
The ratio between two numbers is 4:5. If each number is increased by 6, the ratio between then become 7:8, find the difference between numbers.
The ages of X and Y are in the proportion of 6: 5 and the total of their ages is 66. The proportion of their ages after 4 years will be:
A sum of Rs. 594 is divided among X, Y and Z such that X gets Rs. 156 more than Y. Y gets Rs. 78 more than Z. Find the share of Z?