## anonymous 4 years ago a 80 cm tall sunflower increases its length by 5% per day during a sunny period. a) how much growing sunflower in a week?

1. anonymous

there is a method of successive % change which can be applied here. But you will have to apply it 4 times as it is only valid for 2 quantities. $a +b +\frac{ ab }{ 100 }$ Where a and b are percentages.

2. anonymous

solve it plz :D ,

3. anonymous

$80(1.05)^7$

4. anonymous

The Better way is that you follow @satellite73, @sarmandi His method is easy and quick.