A man starts repaying his loan as first installment of Rs.1000 . If he…
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A man starts repaying his loan as first installment of Rs.1000 . If he increases the installment by Rs. 50 every month. What amount will he pay in the 20th installment ?
- A.
1900
- B.
1950
- C.
2000
- D.
1850
Attempted by 853 students.
Show answer & explanation
Correct answer: B
Solution
Concept:
nth term of A.P are a, a + d , a + 2d, .... ,a + (n-1)d .
Tn = an = a + ( n - 1 ) d
Where a = first term and d = common difference.
Calculation:
Here a = 1000 , d = 50
To Find: What amount will he pay in the 20th installment
Now a20 = a + 19d
= 1000 + 19 × 50
= 1000 + 950
= 1950