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Mathematics, 21.05.2021 03:30 noah12345678

In a storeroom, there are 30 blue balls,48 green balls, some red balls and some white balls. there are 3 times as many green balls as red balls and 5 times as many blue balls as white balls. (a) How many balls are there altogether?
(b) How many balls are left in the room if 7/10 (fraction) of the balls are taken away?
pls help me answer both

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