An inter-species meeting on Mars

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100 aliens attended an inter-species meeting on Mars. 76 of them needed breathing apparatus, 52 needed shaded goggles, but 23 aliens didn’t need either. How many aliens needed breathing apparatus goggles?

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  1. Rithvik24 December 2021 at 09:45

    76 + 52 is 128 and that is already more than how much we need. 100 - 23 would be the amount we need and that is 77. Now, we can do 128 - 77 to get 51. 51 is the number we need to subtract. Try and see if you can solve it from here. If not, contact me on the menu page.

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