Stacia need 39 diamonds for every 3 chandeliers how many diamonds does she need for 4 and 10 chandeliers

so, she needs 39 diamonds for 3 chandeliers h, let's see how many per chandelier anyway?   39 ÷ 3 = 13.  Aha she needs 13 diamonds per each chandelier.

how many for 4?  4 * 13.

how many for 10? 10 * 13.

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