Let the initial investment of A and B is 18x and 7x
After 4 months from the start of business,
A invest Rs. 2000 more for each eight months.
Then total investment of A
=18x×4+(18x+2000)×8=72x+144x+16000=216x+16000
After 4 months, from the start of business,
B invest Rs. 7000 more for each eight months.
Total investment by B
=7x×4+(7x+7000)×8=28x+56x+56000=84x+56000
According to the question,
⇒216x+1600084x+56000=21
⇒ 216x + 16000 = 168x + 112000
⇒ 216x - 168x = 112000 - 16000
⇒ 48x = 96000
⇒ x = 2000
Total initial investment of A and B
= (18 + 7) × 2000
= Rs. 50000
Related Question
View Allx + 1/x = 3
⇒ x2+ 1/x = 3
⇒ x2 + 1 = 3x
⇒ x2 - 3x + 1 = 0
⇒ x2 -3 . x . 1 + 12 = 0
⇒ (x-1)2 = 0
⇒ x - 1 = 0
x = 1
প্রদত্ত রাশি,
x9 + 1/x9
= 19 + 1/19
= 1 + 1/1
= 1 + 1/1
= 2/1
= 2 (Answer)
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