Answer:
$0.02
Explanation:
The rice-to-spice ratio is 4:1.
Each serving has 20 grams of spice
This means:
4/1 = x/20
Cross Multiply
x = 4 × 20
x = 80
Each servings = 80 grams of rice and 20 grams of spice
We are told that:
He wants to make 2 servings, where each serving has 20 grams of spice. He, therefore, goes to the store and spends $3.20 on rice.
2 servings= 2 × 80 grams of rice
= 160 grams
He goes to the store and spends $3.20 on rice.
Hence,
160 grams = $3.20
1 gram = x
Cross Multiply
160 × x = 3.20
x = 3.20/160
x = $0.02
The price of rice per gram is $0.02