The price of 7 bananas is equal to the cost of 3 kiwis. The price of 2 kiwis is equal to the cost of 1…
The correct choice is: “22” Let B, K and C be the prices. 7B = 3K gives K = 7B/3. Then 2K = B + 5C gives 14B/3 = B + 5C, so 5C = 11B/3 and C = 11B/15. 30 chikoos cost 30 ×…
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The price of 7 bananas is equal to the cost of 3 kiwis. The price of 2 kiwis is equal to the cost of 1 banana and 5 chikoos. If Rambo has just enough money to buy 30 chikoos, then how many bananas Rambo could buy with the same amount?
Answer and explanation
Correct answer A
The correct choice is: “22”
Let B, K and C be the prices. 7B = 3K gives K = 7B/3. Then 2K = B + 5C gives 14B/3 = B + 5C, so 5C = 11B/3 and C = 11B/15. 30 chikoos cost 30 × 11B/15 = 22B, which is the price of 22 bananas.
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