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Solve this question plz.... |
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Answer» Step-by-step explanation: a+3d=550 a+6d=625 - - - -3d= -75 d=25 a+3d=550 a=550-75 a=475 i) the production in FIRST YEAR is 475 units. ii) S15=15/2[2(475)+14(25)] =15/2[950+350] =15/2*1300 =15*650 =9750 units iii) t15=a+14d =475+14(25) =475+350 =825 units |
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