This question was previously asked in

DSSSB LDC Official Paper 3 (Held on : 25 Aug 2019 Shift 1)

- 2/5 hour
- 1/6 hour
- 1/3 hour
- 1/4 hour

Option 2 : 1/6 hour

**Given:**

Typing speed of x = 25 words per minute

Typing speed of y = 30 words per minute

**Calculation:**

According to the question,

The number of words typed by x and y in one minute = 25 + 30

⇒ 55 words

Time required to type 550 words essay = 550/55

⇒ 10 minutes

⇒ 10/60

⇒ 1/6 hours

**∴ The required time is 1/6 hours.**

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