Directions : Given below is the information about wind mills in four different…
IBPS · 2018
Directions : Given below is the information about wind mills in four different villages A, B and C and D. Number of wind mills in villages A, B, C and D are 24, 20, 15 and 12 respectively. Number of electricity units produced in one week by one wind mill when they operate with maximum efficiency in village A, B, C and D is 2 lakh units/week, 80000 units/ week, 1 Lakh units/week and 1.5 Lakh units/week respectively. Number of houses in each village A, B, C and D are 540, 240, 150 and 350 respectively. Total units produced are consumed equally by each house in the village
→ Different number of winds mills are operate in four different weeks In first week number of wind mills are operative in village A, B, C and D are 75%, 50%, 40% and 75% respectively. In second week it is 50%, 75%, 60% and 50% respectively. In third week it is 75%, 100%, 80% and 50% respectively. In fourth week it is 100%, 50%, 60% and 75% respectively.
→ Given below is the three ranges of efficiency of a wind mills (number of unit produced /Week by one mill)
Efficiency Type | Range |
|---|---|
Efficiency 1 | 60% - 70% |
Efficiency 2 | 45% - 55% |
Efficiency 3 | 30% - 40% |
Three wind mills also operate on different levels
→ level 1 : Consider upper limit of range of efficiency
→ level 2 : consider mid of range of efficiency
→ level 3 : consider the lower range of efficiency
Eg. If a wind mill is operative at efficiency 2 then its level 2 efficiency will be = (45+55)/2 = 50%
Its level 1 efficiency will be 55%
Its level 3 efficiency will be 45%
Total units produced in village C in second and fourth week at level 1 of efficiency range 1 is what percent of total units produced in village A in first and fourth week at level 2 of efficiency range 1
- A.
25⁷⁄₁₃%
- B.
23²¹⁄₂₇₃%
- C.
13¹²⁄₁₃%
- D.
22⁵⁄₁₃%
- E.
24⁵⁄₁₃%
Attempted by 2 students.
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Correct answer: B