A lent Tk. 4000 to two persons for one year. Some amount was lent at 5% and the rest at 4%. He got Tk. 180 as interest. How much money was lent at 5%?
Created: 6 years ago |
Updated: 2 years ago
best des
Interest, I = P n r
Let the amount lent at 5% be M.
Now, M x 1 x 5/100 + (4000 - M) x 1 x 4/100 = 180
or, 5M + 4(4000 - M) = 180 x 100 [multiply both sides by 100]
or, 5M + 16000 - 4M = 18000
or, M = 18000 - 16000 = 2000 TK
Md Azizur Rahman
Founder of Satt
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