Question

Just help with the problem and do it quickly please

Answer 1

SOLUTION

In 2020 black engineers under 30 is 70% of 500, which is

$\frac{70}{100}\times500=350$

In 2021 500 members joined making a total of 1000 members.

The black engineers together are now 50% of 1000, which is 500

So the numbers of black engineers that joined in 2021 becomes

$500-350=150$

Hence the answer is 150