An Internet site sells 120 types of cell phones. The ratio of the number of smartphones to the number of feature phones is 3:5. How many of the 120 types of cell phones are smartphones?
Answers
45 of the 120 types of cell phones are smartphones.
Step-by-step explanation:
The total no. of cell phones sold by the internet site = 120
The ratio of the no. of smartphones to the no. of the feature phones = 3:5
So, let the no. of the smartphones be “3x” and the no. of the feature phones be “5x”.
Therefore, we can write the eq. as,
3x + 5x = 120
⇒ 8x = 120
⇒ x = 120/8
⇒ x = 15
∴ 3x = 3 * 15 = 45
Thus, there are 45 smartphones out of 120 types of cell phones.
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