A person received the salary for the 1st year is ` 5,00,000 per year and he received an increment of ` 15,000 per year then the sum of the salary he taken in 10 years: (a) ` 56,75,000 (b) ` 72,75,000 (c) ` 63,75,000 (d) None of these
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(c) part is the correct option
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2
correct answer is a
Step-by-step explanation:
let a= 5,00,000
d= 15,000
n= 10
formula: Sn= n/2(2a+(n-1)d)
=10/2(2×5,00,00+(10-1)15,000)
=5(10,00,000+9(15,000)
=5(10,00,000+1,35,000)
=5(11,35,000)
=56,75,000
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