View all: UTTARA BANK LTD (DO) WRITTEN QUESTION (MATH) SOLVE | 2018
Correct Answer: The cost of the cow is TK.53.061.22 & The cost of the ox is TK.13,061.22
Explanation:
Let. the cost price of Cow be X TK
And the cost price of Ox be Y TK
According to the questions.120%x+l25%y = 80,000
=> $\frac{120X}{100}+\frac{125y}{100}=80,000$
=> 120x + 125y = 80,000 x 100=> 24x + 25 = 16,00,000 …………….(i)
Again. 125%x + 120%y = 82,000
=> $\frac{125x}{100}+\frac{120y}{100}$=82,000
=> 125x + 120y = 82,000 x 100
so, 25x + 24y = 16,40,000 ……………………….(ii)
(i) x 25 – (ii) x 24
600x + 625y = 4,00,00,000
600x+ 576y = 3,93,60,000
=> 49y = 6,40,000
y = 13,061,22
putting the valu of y =13,061,22 in equation (i) we get
24x=16,00,000-3,26,530.61
=> 24x = 12,73,469.4
so, x=53,061.22
The cost of the cow is TK.53,061,22 & The cost of the ox is TK.13,061.22