Final answer:
Given John's income of ZMW10 and assuming an exchange rate of 1 ZMW to 1 Naira, he could afford 0.25 kg of peas for 40N per kg. However, this does not match any of the provided options, indicating a possible error in the question or options.
Step-by-step explanation:
To determine how many kilograms of peas John can consume with his entire income, we need to calculate the total amount of money he can spend and divide that by the price per kilogram of peas. The given information states that John's income is ZMW10, the price of beans is 20N per kg and the price of peas is 40N per kg. Since he wants to spend his entire income on peas, we must make sure that the income is converted to the same currency unit used for the price of peas (Naira).
Firstly, we need to find out the exchange rate between ZMW (Zambian Kwacha) and N (Naira), but since that information isn't provided, we'll have to assume that the exchange rate is 1:1 for this problem. Then we would divide John's total income by the price of peas to find out how many kilograms he can afford:
John's income in Naira: 10N (assuming 1 ZMW = 1 Naira)
Price per kilogram of peas: 40N
Total kilograms of peas John can buy: 10N / 40N/kg = 0.25 kg
However, none of the given options (15 kg, 10 kg, 5 kg, 20 kg) match the calculated result of 0.25 kg, so it would appear there might be a mistake with the question or provided options. If the question was correct under the provided assumptions, John would not be able to purchase even 1 kg of peas.