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<html><body><h2 id="content-id-1850973426-2"><b>Time And Work Questions Overview</b></h2><p>Time And Work Questions have a good weightage in the Sbi Po Exam and the type of question asked in Sbi Po exam is similar to the question mentioned below. It has been solved and explained by KD Live Experts under the guidance of Neetu Mam and they have tried to elaborate the concept used in Time And Work Questions.</p><h2 id="content-id-9018362754-3"><b>Question On Time And Work </b></h2>A, B, and C can complete a piece of work in 15 days, 30 days, and x days respectively. They started the work together, but after 3 days, A left the job. B and C continued working together and finished the remaining work in 6 days. If C reduces his speed and works at only 75% of his original efficiency, how many days will he take to complete the entire work alone?
<div class="row show--dificulty--bar" style="margin-top:8px;"><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex !important;border-right:0.1px solid #eee;"><h3 style="font-size:12px !important;">Difficulty : Easy </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 46 Seconds </h3></div></div><h2 id="content-id-9123406875-4"><b> Time And Work Questions Options</b></h2><ol><li><p>26</p>
</li><li><p>24</p>
</li><li><p>22</p>
</li><li><p>20</p>
</li><li><p>18</p>
</li></ol> <h2 id="content-id-2914873506-5"><b> Time And Work Questions Solution</b></h2><p>The correct answer is <strong>option 2</strong> i.e. <strong>24</strong></p>

<p>A's efficiency = 1/15, B's efficiency = 1/30, C's efficiency = 1/x</p>

<p>Work done in first 3 days = 3(1/15 + 1/30 + 1/x)</p>

<p>Remaining work finished in 6 days by B and C:</p>

<p>3(1/15 + 1/30 + 1/x) + 6(1/30 + 1/x) = 1</p>

<p>3(1/10 + 1/x) + 6(1/30 + 1/x) = 1</p>

<p>3/10 + 3/x + 1/5 + 6/x = 1</p>

<p>1/2 + 9/x = 1</p>

<p>9/x = 1/2</p>

<p>x = 18</p>

<p>C alone takes 18 days.</p>

<p>At 75% efficiency, new time = 18 ÷ (3/4) = 24 days</p>
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The correct answer is option 2 i.e. 24  - Time And Work Questions are asked in Sbi Po exams and your question has been explained by experts like Neetu Mam.

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