Question

Brass is an alloy formed from copper and zinc in the ratio 3:2, based on weight. If 120g of copper is needed for a certain piece of brass, how much zinc will be needed?
Ms. Sue
3/2 = 120/x

Cross multiply and solve for x.

Nfckg2495;
i don't have an answer i just have question,

All the members of a construction crew work at the same pace. Four of them working together are able to pour concrete foundations in 32 hours. How many hours would this job take if the number of workers decreased 2 times.

i am not sure how to solve this but i think that one off you will.
Ms. Sue is wrong. The ansewer is x=4
80
it is 80g
The correct answer is 80g.
jeez a weeza im sorry jim thorpe you don't gotta be so rude
Ms. Sue is actually right.
80 grams
it's 80 grams you fat loads of pop
80g is the answer.

Ratio: 3 : 2
Logic: 120 : 80
It is 80 grams.

3x=120
x=40
2∙40= 80 grams

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