B arranges to payoff a debt of rs 4,800 in 24 monthly instalments which from an A. P. After 20 instalments
B becomes insolvent and his creditor finds that rs 1,200 still remains unpaid, Find the value of each of the
first four installments.
Answers
85 , 95 , 105 , 115 are the value of each of the first four installments.
Step-by-step explanation:
Let say AP is
a , a + d , a + 2d ................................... , a +23d
Sum of 24 = (24/2)(a + a + 23d)
= 12(2a + 23d)
12(2a + 23d) = 4800
=> 2a + 23d = 400
21st = a + 20d , 22nd = a + 21d , 23rd = a + 22d , 24th = a + 23d
=> a + 20d + a + 21d + a + 22d + a + 23d = 1200
=> 4a + 86d = 1200
=> 2a + 43d = 600
=> 43d - 23d = 200
=> 20d = 200
=> d = 10
2a + 23d = 400
=> 2a + 230 = 400
=> 2a = 170
=> a = 85
85 , 95 , 105 , 115 are the value of each of the first four installments.
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Step-by-step explanation:
associative kaisi m Disick all