Natalie had a box of marbles. Her mother gave her twice the number of marbles that she had. Her father gave her thrice the number of marbles that her mother had given her. She had 27 marbles in the end. How many marbles did she have at first?

autors:

Līderu saraksts

Vizuālais stils

Iespējas

Pārslēgt veidni

Atjaunot automātiski saglabāto: ?