RRB Group D 15-Sep-2018 Shift 1 Solved Paper

Question : 59 of 100

Marks: +1, -0

17 trainees can do as much work as 4 experts can do in a day. It takes 12 experts and 9 trainees 5 days to dig a pond. How many trainees will one need along side 4 experts to dig a similar pool in 15 days?

Validate

Solution:

17 {T}=4 {E}

\;\text " ATQ, "\;

12 {E}+9 {T} ⟶ 5 {D}

17 × 3 {T}+9 {T} ⟶ 5 {D}

51 {T}+9 {T} ⟶ 5 {D}

⇒ 60 {T} ⟶ 5 {D}

\;\text " Thus, "\; \;{60}/{3} {T} ⟶ 5 × 3 {D}

20 {T} ⟶ 15 {D}

From question

4 {E}+? {T} ⟶ 15 {D}

17 {T}+? {T} ⟶ 15 {D}

⇒ \;\text " Required traine "\;=20-17=3

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