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the table shows the number of minutes Tim has for lunch and study hall. he calculates that these two periods account for 18% of the minutes he spends at school .how many minutes does he spend at school?

the table shows the number of minutes Tim has for lunch and study hall. he calculates that these two periods account for 18% of the minutes he spends at school class=

Answer :

absor201

Tim spends 500 minutes at the school.

Step-by-step explanation:

Given,

Time for lunch = 45 minutes

Time for study hall = 45 minutes

Total = 45+45 = 90 minutes

This represents 18% of the total minutes Tim spend at school.

Let,

x be the total minutes Tim spend at school.

18% of x = 90 minutes

[tex]\frac{18}{100}x=90\\\\0.18x=90[/tex]

Dividing both sides by 0.18

[tex]\frac{0.18x}{0.18}=\frac{90}{0.18}\\x=500[/tex]

Tim spends 500 minutes at the school.

Keywords: percentage, division

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