Asatellite is composed of 30 modular units, each of which is equipped with a set of sensors, some of which have been upgraded. each unit contains the same number of non-upgraded sensors. if the number of non-upgraded sensors on one unit is 1/5 the total number of upgraded sensors on the entire satellite, what fraction of the sensors on the satellite have been upgraded?
a. 5/6b. 1/5c. 1/6d. 1/7e. 1/24

Option D.

Step-by-step explanation:

It is given that a satellite is composed of 30 modular units. Each unit contains the same number of non-upgraded sensors.

Let x be the total number of upgraded sensors on the entire satellite.

The number of non-upgraded sensors on one unit is 1/5 the total number of upgraded sensors on the entire satellite.

Non-upgraded sensors on one unit =

Non-upgraded sensors on 30 unit =

Total number of sensors on the entire satellite is the sum of upgraded  and non-upgraded sensors

We need to find the fraction of the sensors on the satellite have been upgraded.

Therefore, the correct option is D.

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6