Let's denote the cost of the car as \( C \) and the cost of one bicycle as \( B \).
According to the problem, we have the equation:
\[ C = 180,000 - 4B \]
Akram wants to purchase one car and one bicycle, so the total amount he needs to pay for both would be:
\[ C + B = 180,000 - 4B + B = 180,000 - 3B \]
Akram is willing to make a down payment of Rs. 90,000. Therefore, the amount he needs to finance (credit) is given by:
\[ \text{Credit} = (C + B) - \text{Down Payment} \]
Substituting into the equation we have:
\[ \text{Credit} = (180,000 - 3B) - 90,000 \]
Now simplifying this gives:
\[ \text{Credit} = 90,000 - 3B \]
The value of \( B \) (the cost of one bicycle) is not provided, so we can't calculate an exact amount for the credit. However, you can evaluate it based on various possible prices for \( B \) (as long as it keeps \( C \) and \( B \) positive).
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If, for example, the bicycle costs Rs. 30,000: \[ \text{Credit} = 90,000 - 3(30,000) = 90,000 - 90,000 = 0 \]
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If the bicycle costs Rs. 20,000: \[ \text{Credit} = 90,000 - 3(20,000) = 90,000 - 60,000 = 30,000 \]
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If the bicycle costs Rs. 10,000: \[ \text{Credit} = 90,000 - 3(10,000) = 90,000 - 30,000 = 60,000 \]
Thus, the amount of credit Akram requires will depend on the price of the bicycle. If you specify the price of the bicycle, we can determine the exact credit amount.