Find two numbers whose sum is 6 and whose difference is 2.
Your answer is:

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Math it's appreciated. (picture provided)