Question

In a motor of 120 machine parts, 5% parts were defective. In another motor of 80 machine parts, 10% parts were defective. For the two motors considered together, the percentage of defective machine parts were

A) 7 B) 6.5 C) 7.5 D) 8

Answer 1

Answer:

7 is the answer.

in the first motor, 5/100 of 120 parts were defective i.e 6 parts are defective.

In the 2nd motor, 10/100 of 80 parts were defective i.e 8 parts were defective.

So, total parts defective were (8+6)=14

And total parts were (120+80)= 200.

So percentage of defective parts=14/200×100%=7%

Answer 2

Answer:

ANSWER IS THE 7

Step-by-step explanation:

PURE CONFORM