3 answers
(click or scroll down)
k = s+20
k+4s = 330
solve for k
k+4s = 330
solve for k
1. Assign variables: Let's assign variables to the unknowns. Let's say the mass of the knife is "K" grams.
2. Set up equations: We are given that the knife is 20g heavier than a spoon. Therefore, the mass of the spoon would be (K - 20) grams.
3. Use the information about four spoons: The sum of the mass of the knife and four spoons is 330 grams. So, we can write the equation as:
K + 4(K - 20) = 330
4. Solve the equation: Simplify and solve the equation to find the value of K.
K + 4K - 80 = 330
5K = 410
K = 82
Therefore, the mass of the knife is 82 grams.