1.

The ratio of number of males and females workers in a factory was 2 : 5 with total number of workers as 1400. If the ratio of females to males changed to 5 : 4 when 100 more females and a few more male workers joined the company, then what is the number of males who joined?1). 8042). 4083). 8404). 480

Answer»

LET the number of male and female WORKERS be 2x and 5x

⇒ 2x + 5x = 1400

7X = 1400, x = 200

Thus, number of female workers = 5x = 1000

⇒ Number of male workers = 2x = 400

⇒ Now the ratio of female to male changes to 5 : 4 when 100 more FEMALES and a few more male workers joined the company.

Let the number of male workers who joined be x.

⇒ Then, (1000 + 100)/ (400 + x) = 5 : 4

1100/ (400 + x) = 5 : 4

⇒ 4400 = 2000 + 5x

⇒ 5x = 2400

∴ x = 480



Discussion

No Comment Found