For the following questions answer them individually
If $$X : Y : Z = 1 : 2 : 3$$ and, $$X^2 + Y^2 + Z^2 = 224$$, then what is the value of $$X + Y + Z$$?
The data given below shows the marks obtained by various students.
What is the mean marks (Correct up to two decimal places) of given data?
What is the value of $$(3 \times 4 of 12 \div 2) \div 9 \times 4 + 4 \div 8 + 3 \times 2 ?$$
Five technicians of a Studio A can do a work in 30 days. Eight technicians of a Studio B can do the same work in 15 days. In how many days can one technician of Studio A and one technician of Studio B, together do the same work ?
The proportion of students in three classes is 3 : 4 : 5. If the number of students is increased by 20 in each class, then the proportion changes to 4 : 5 : 6. What is the initial number of students in the three classes taken together?
The Bar graph given below presents the number of males and females working in five different companies.
What is the ratio of the total number of males working in the Companies C2 and C3 to the total number of females working in C1 and C5?
The cost price of an article 1 is six times of the profit earned by selling it at SP1. Cost price of article 2 is three times the loss incurred by selling it at SP2. If the cost prices of the articles are the same, then what is the ratio of SP1 and SP2?