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Buoy · Answer 1 · 2018-12-12T00:38:59+0000

You can set up an equality:

40/160 = 225/x

Cross multiply:

40x = 160(225)

Evaluate:

40x = 36000

Isolate x:

x = 900.

So, 900 batteries are required for 225 calculators.

Hope this helped!! xx

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