In a certain town 65 \% families own cell phones, 15000 families own scooter and 15 \% families own both. Taking into consideration that the families own at least one of the two, the total number of…

Question

In a certain town 65 \% families own cell phones, 15000 families own scooter and 15 \% families own both. Taking into consideration that the families own at least one of the two, the total number of families in the town is

Accepted Answer

Correct answer: B. (b) Let total number of families be x. Then according to question, x= 65x100+15000- 15x100 ⇒ x2=15000 ⇒x=30 ,000 Thus, there are 30,000 families in the town.

$In a certain town 65 % families own cell phones, 15000 families own scooter and 15 % families own both. Taking into consideration that the families own at least one of the two, the total number of families in the town is$

Solution

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