27-01-2015
Mathematics

Answered

Ly scored 90% on a test. If he answered 135 questions correctly, how many questions were on the test?

Answer :

27-01-2015

[tex]x-\ all\ questions\\\\ 90\%x=135\\\\ 0.9x=135\ \ \ | divide\ by\ 0.9\\\\ x=150\\\\ There\ were\ 150\ questions.[/tex]

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