The average wage of a worker during a fortnihgt comprising 15 consecutive working days was Taka 90 per day. During the first 7 days, his average wage was Taka 87 per day and the average wage during the last 7 days was Taka 92 per day. What was his wage on the 8th day ?

A 83
B 90
C 92
D 97

Correct Answer: 97

15 দিনের কাজের মোট বেতন ( 15 × 90) = 1350 টাকা ১ম 7 দিন ও শেষ 7 দিনের কাজের মোট বেতন ( 7 × 87 + 7 × 92) = 609 + 644 = 1253 টাকা। অষ্টম দিনের কাজের বেতন ( 1350 - 1253) টাকা = 97 টাকা
Bissoy MCQ
#গণিত #গড় (Average) #Janata Bank Ltd #Janata Bank Ltd - Asst. Executive Officer - 04.08.2017

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