april1955 april1955
  • 18-07-2018
  • Mathematics
contestada

Derek's score on a test was 90 percent. He had 72 questions right. How many problems were on the test?

Respuesta :

Аноним Аноним
  • 18-07-2018

90% = 72 questions


\\Find 1%

1 % = 72 ÷ 90 = 0.8


\\Find 100%

100% = 0.8 x 100 = 80 questions


Answer: There were 80 questions

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