Three numbers are in the ratio of 5: 6: 7. If the product of those numbers is 5670 then the largest number is-

There are 240 workers and an amount of Rs. 2880 is to be divided among them. The ratio of total amount received to men and women is 5 : 4 and the ratio of the amount given to each man and each woman is 5 : 8. Find the number of men.

How much percent above the cost price should a shopkeeper mark his goods so as to earn a profit of 32% after allowing a discount of 12% on the marked price? 

A dealer marks his goods at such a price that after allowing a discount of 12.5% for cash payment, he makes a profit of 20%. What is the marked price (in rupees) of the article which costs him Rs. 210?

Direction: what should come in place at question mark(?).

$$ {4\over 7}×{2{4\over 5}÷{2\over 5}=?}$$

The marked price of an article is ₹ 100. A discount series of 5%, 10% successively reduces the price of an article by 

Directions: The following questions are accompanied by three statements (A) or (I), (B) or (II), and (C) or (III). You have to determine which statement(s) is/are sufficient/necessary to answer the questions.

What is the non-voting population of a certain country?
A. Only males above 21 years of age can vote.
B. Males above 21 years form 30% of the total population.
C. The total population of the country is 30 million.

$$ { \sqrt{(0.798)^2+0.404×0.798+(0.202)^2}+1=?} $$