Callummorgan2007 Callummorgan2007
  • 22-12-2020
  • Mathematics
contestada

mark got 14 problems wrong on the test. his score was 72% correct.how many problems were on the test

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 30-12-2020

9514 1404 393

Answer:

   50 problems

Step-by-step explanation:

The percentage wrong was  100% -72% = 28%. Then the number n of problems on the test was ...

  14 = 0.28·n

  n = 14/0.28 = 50

There were 50 problems on the test.

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