Question
Zara, Jane and Penelope have 252 buttons. Zara has 34 as many buttons as Jane. Penelope's buttons is 15 of the total number of Zara's and Jane's buttons. How many buttons must Jane give to Penelope so that both Zara and Penelope will have the same number of buttons?
4 m

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Zara, Jane and Penelope have 252 buttons. Zara has 34 as many buttons as Jane. Penelope's buttons is 15 of the total number of Zara's and Jane's buttons. How many buttons must Jane give to Penelope so that both Zara and Penelope will have the same number of buttons?