singhaldheeraj wrote:
How much special mix must one add to a certain recipe for pancakes to make extra-thick pancakes?
(1) The ratio of ingredients in regular pancakes is 5/4 cups of special mix to 1/4 cup of milk to cup of oil.
(2) Extra-thick pancakes are made by adding enough special mix to the regular recipe for a total of 3 cups of ingredients.
The question stem itself is suspect here.
"How much special mix must one add to a certain recipe for pancakes to make extra-thick pancakes?"
How can you add x gms of an ingredient to a recipe without defining the quantity that the recipe makes? You can add an ingredient to a recipe in ratio form only. Recipes are read as ratios and hence the question is not very logical. They do sometimes mention - recipe for 4/6 cups etc but in that case, they need to specify this. Or better yet, the question needs to talk about one specific instance (e.g. how much special mix was added after making N cups of pancake mix with regular recipe?)
(1) Statement 1 tells you the ratio of the ingredients of regular recipe. We don't know what amount of pancake mix was made with the regular recipe.
(2) Not logical. Regular recipe is a ratio of ingredients. It does not define the amount made. If it does define the amount made, we need that information but we don't have it.
Using both, the amount of pancake mix made with regular recipe is not known so we can't even try to find the amount of special mix that has to be added.
Answer (E)