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This month john spent 120 minutes calling on the phone. This is 20% less than the last month. How many minutes did he spend on the phone last month?

Respuesta :

120 x 10 =1200

120 x 10 =1200

1200+1200=2400

Last month he used 2400 minutes

Answer:

150 minutes

Step-by-step explanation:

20% less is (100 - 20)% = 80% = [tex]\frac{80}{100}[/tex] = 0.8

time spent on phone last month = [tex]\frac{120}{0.8}[/tex] = 150 minutes

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