Problema Solution
a factory produced 800 electric bulbs on one a day. of those 720 passed quality check.
a) What fraction of the electric bulbs passed the quality checks?
A package of 20 electric bulbs was prepared.
b) How many of the 20 electric bulbs are likely to have passed the quality checks?
Answer provided by our tutors
720 / 800 = 9/10
9/10 of the bulbs passed the quality checks
20 *(9/10) = 18
18 bulbs are likely to have passed the quality checks