A knife Has a mass of grammes .it's 20g heavier than spoon the mass of a knife and four spoon is 330 .find the mass of the knife

k = s+20

k+4s = 330

solve for k

john

To find the mass of the knife, we can follow these steps:

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.