10. A manufacture of T.V. sets produced 600 sets in
the third year and 700 sets in the seventh year.
Assuming that the production increases
uniformly by a fixed number every year, find
(i) the production in the 1 st
year
(ii) the production in the 10th
year.
(iii) the total production in first 7 year.
Answers
Answered by
2
Answer:
Step-by-step explanation:
Yearly production values will be in Arithmetic Progression.
d be the fixed production increase every year
3rd year production = 3rd term = a+2d
7th year production = 7th term = a+6d
a+6d - (a+2d) = 700-600 = 100
4d = 100
d = 25
a+2d = 600
a+50 = 600
a = 550
Production in 10th year = a+9d = 550+9d = 550+225= 775.
Sum of n terms of AP = n/2( first term + nth term)
Total production in seven year = 7/2(550+700) = 4375.
Answered by
2
Answer:
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