Question

Of 500 new electronic products, 280 were intended for people over the age of 16, and 320 used a rechargeable battery. Of those products with a rechargeable battery, 150 were intended for those under the age of 16. What is the probability that a new electronic product is intended for someone over the age of 16 or uses a rechargeable battery?

Answer 1

I have included the work and answer on the picture attached below:

Answer 2

0.66

Explanation:

Given that there are in total 500 new electronic products, 280 for people over age 16, 320 rechargeable battery.

of these 320, 150 were for age under 16, which implies 170 were for people over age 16.

Over age 16 Under age 16 Total

Rechargeable 170 150 320

Others 110 70 180

Total 280 220 500

Required probaility = Probability that a new electronic product is intended for someone over the age of 16 or uses a rechargeable battery

=
`(280+320-170)/(500) =(330)/(500) \\=0.66`