To calculate the amount of US dollars Rajendra should buy and sell to make a profit of Rs 62,450, we need to consider the devaluation of Nepali money and the difference between the buying and selling rates of the US dollar.
Let's assume Rajendra buys x US dollars. The cost of buying x US dollars would be Rs 130.94 * x.
After the devaluation of Nepali money by 10%, the new value of the Nepali currency would be 90% of its original value. So, the selling rate of the US dollar after devaluation would be Rs 131.54 * 0.9.
Rajendra sells the US dollars he bought at the new selling rate. The amount he receives from selling would be (Rs 131.54 * 0.9) * x.
To calculate Rajendra's profit, we subtract the cost of buying from the amount received from selling:
Profit = (Rs 131.54 * 0.9) * x - (Rs 130.94 * x)
We know that the profit is Rs 62,450, so we can set up the equation:
62,450 = (Rs 131.54 * 0.9) * x - (Rs 130.94 * x)
Simplifying the equation:
62,450 = Rs 118.386 * x - Rs 130.94 * x
Combining like terms:
62,450 = -Rs 12.554 * x
Dividing both sides by -12.554:
x = 62,450 / -12.554
x ≈ -4,979.67
The result is approximately -4,979.67 US dollars. However, it is not possible to buy or sell a negative amount of currency, so there seems to be an error in the given information or calculation. Please double-check the values provided or the calculations used in the problem.
