buddyboii
buddyboii buddyboii
  • 12-02-2018
  • Mathematics
contestada

A) What number is 55% of 40?

B) 75% of what is 42?

Respuesta :

Leroro123
Leroro123 Leroro123
  • 12-02-2018
A. 22 Percent
B. 31.5 Percent

Divide the number by a 100 and multiply by the percentage
Answer Link
articunojaz
articunojaz articunojaz
  • 12-02-2018
A. 22. 40/x=100/55(40/x)*x=(100/55)*x       40=1.81818181818*x       
(1.81818181818) to get x40/1.81818181818=x 22=x x=22

2. 3.51 42/x=100/75(42/x)*x=(100/75)*x       42=1.33333333333*x       
(1.33333333333) 42/1.33333333333=x 31.5=x x=31.5
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