contestada

a light switch works 25% of the time, how many times does it not work if switched on 64 times in a week

Respuesta :

SINAZEUS
25% of 64 is 16
[tex] \frac{25}{100} = \frac{x}{64} \\ x = \frac{64 \times 25}{100} = \frac{1600}{100} = 16[/tex]
it will work properly 16 times
[tex]64 - 16 = 48[/tex]
it will not work 48 times
hope this helps