Question

Five spoons and two glasses weigh as much as 3 plates. One plate weighs as much as 1 spoon and 1 glass. How many spoons weigh as much as 1 glass?

Answer 1

set variables,
s = spoons
g = glass
p = plates

5s + 2g = 3p
1p = 1s +1g

#s = 1g

Answer 2

looking at the 2nd equation above...I would multiply each side by 3

3p = 3s + 3g

i did that so that I can set equation 1 and 2 to equal each other

Answer 3

5s + 2g = 3s + 3g
5s - 3s = 3g - 2g
2s = 1g

so your answer is 2 spoons weigh as much as 1 glass

Answer 4

Thank you so much!