Question

3. In a factory there are three types of bulbs L1,
L2 and L3 which produces 20%, 15% and 32% 29
of the total products respectively. L1, L2 and
L3 produces 3%, 7% and 2% defective
products, respectively. Find the percentage of
non-defective products ?​

Answer 1

Answer: let total product be 100

L1 produce 20% of total product( 20% of 100 = 20)and 3% defective.

then, L1 non-defective=20 x 97/100 =

=19.4

L2 15% total product( 15% of 100 = 15) and 7% defective product

then, L2= 15 x 93 / 100 = 13.95

L3 non defective = 32 x 98 /100 =31.36

% of non defective product = 19.40 + 13.95 + 31.36/100 x 100 = 64.71...

Or

(20*0.97) + (15*0.93) + (32*0.98)= 19.4+13.95+31.36 = 64.71