Kai calculates that he spends 15% of a school day in science class. If he spends 75 minutes in science class, how many minutes does Kai spend in school?

x − min u t es in sc h oo l 15% = 0.15 100% = 1 F ro m p ro p or t i o n : 75 − 0.15 x − 1 0.15 x = 75 ∣ : 0.15 x = 500 He s p e n d s 500 min u t es in sc h oo l .

Answered by luana | 2024-06-10

Answer-
Kai spends 8 hours 20 minutes in school.
Solution-
Let us assume, Kai spends x minutes in school.
Kai calculates that he spends 15% of a school day in science class and that is 75 minutes, i.e
⇒ x × 100 15 ​ = 75
⇒ x = 75 × 15 100 ​
⇒ x = 15 7500 ​
⇒ x = 500 minutes
⇒ x = 60 500 ​ hours
⇒ x = 3 25 ​ hours
⇒ x = 8 3 1 ​ hours
Therefore, Kai spends 8 hours 20 minutes in school.

Answered by InesWalston | 2024-06-11

Kai spends 500 minutes in school, which is equivalent to 8 hours and 20 minutes. This is calculated based on the fact that 75 minutes is 15% of his total school day. By setting up an equation, we can find the total time spent in school easily.
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Answered by InesWalston | 2024-10-02