Question

26 kg of onions cost $286. how much would 31 kg cost 26 kg of onions cost $286. how much would 31 kg cost

Answer 1

31kg of onion would cost $341

Explanation:

$286 / 26 kg = $11 per kg

31 kg x $11 = $341

Answer 2

Explanation:

Comment

This is a proportion question. A proportion is 2 equal ratios. If you know 3 parts of the proportion (as you do in this question), then the 4th part can be found.

Proportion

26kg/$286 = 31 kg / x

Notice the construction. Mass/money = mass / money. The construction is always the same. The units of one ratio is always made the same way.

Solution

26/286 = 31 / x Cross multiply

26x = 31 * 286 Combine the right

26x = 8866 Divide by 26

26x/26=8866/26

x = 341

Answer: 31 kg onions cost $$341