Question

A typist takes 50 minutes to type 15 pages how long will he take to type 57 pages

Answer 1

Application of Unitary method

Answer: Typist will take 190 minutes that is 3 hours and 10 minutes to type 57 pages.

Explanation:

given that a typist take 50 minutes to type 15 pages

need to determine how long will it take to type 57 pages.

using unitary method first we will determine time required to type a unit of page that is 1 page and then we will multiply it by 57.

Minutes of time required to type 15 pages = 50

⇒ minutes of time required to type 1 page = 50/15 = 10/3

so Minutes of time required to type 57 pages = 57 × minutes of time required to type 1 page = 57 × 10/3 = 19 × 10 = 190 minutes

Hence typist will take 190 minutes that is 3 hours and 10 minutes to type 57 pages.

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