# Peter bought 4/8 kg of grapes. Joe bought 6/8 kg. Who bought more grapes? And by how much more?

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peter bought more grapes

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peter bought more grapes

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If ad > bc, then a/b > c/d. If bc > ad, then c/d > a/b. If bc = ad, then a/b = c/d

Applying that concept to your question, we cross multiply 4/8 and 6/8

Is 8*4 > 8*6? No.

Is 8*6 > 8*4? Yes! Since 6/8 > 4/8, then Joe bought mroe grapes than Peter.