the excess of income over expenditure
Answers
Answered by
12
Answer:
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Explanation:
n
=3+4n given
a
1
=3+4(1)=7
a
2
=3+4(2)=11
a
2
=3+4(3)=15
∴d=a
3
−a
1
=11−7=4
Here a=7, d=4 and n=15
By usingS
n
=
2
n
[2a+(n−1)d] we have,
S
15
=
2
15
[2×7+(15−1)4]
=
2
15
(14+56)
=
2
15
×70=525
(ii) a
n
=9−5n given
a
1
=9−5(1)=9−5=4
a
2
=9−5(2)=9−10=−1
a
3
=9−5(3)=9−15=−6
∴d=a
2
−a
1
=−6−(−1)=−5
Here a=4,d=−5 and n=15
By using S
n
=
2
n
[2a+(n−1)d] we have,
S
15
=
2
15
[2×4+(15−1)(−5)]
=
2
15
(8−70)
=
2
15
×(−62)=−465
Answered by
11
Answer:
Surplus is the excess of income over expenditure. A credit balance in the Income and expenditure account shows surplus. It is the profit earned and should be added to the capital fund on the liabilities side of the balance sheet.
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