a company owner has paid a sum of rs 20800 to an employee as the salary arrears in 25 regular months such that each month payment is rs 35 more than the preceding month.find the arrears amount of the first month and also of the last month
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Answer:
given
sn= 20800
D= 35
n= 25
an= a+(n-1) D
an= a+ (25 -1) 35
an= a+ 24*35
an= a+ 840
an-840 = a. ____1
sn= n/2(a+an)
20800= 25/2 (an-840+an) ____(from-1)
41600= 25(2an-840)
41600= 50an - 21000
41600+21000= 50an
62600= 50an
62600/50=an
1252= an_____2
last month arrears = rs 1252
from __1 and 2
an-840=a
1252-840=a
1252-840= 412
hence first month arrears= rs 412
HOPE IT HELPS ;)
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