# Math: percentage problem

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A set of building blocks includes squares of various shapes and colors. If 20% of the blockers were square and 50% of the squares block are red, then ___ of the blocks are red squares.

My answer is 40% (20% x 50% / 100% = 40%). Is this correct?

• Math: percentage problem -

No. Consider you have 100 blocks.
20 are square.
10 of the square are red.
That is ten percent of the blocks are red squares.

check my thinking.

• Math: percentage problem -

wow... thank you... i feel dumb now...

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