⓵ You need to simplify 40% by dividing 40 by 100 :
40 ÷ 100 = 0,4
⓶ You need to calculate what 40% of 75 is by multiplying 40% (so 0,4) by 75 :
75 × 0,4 = 30
⓷ So the first time the number 75 decreased by 30. In order to know what number we are left with for the second part, we need to subtract 30 from 75 :
75 - 30 = 45
⓸ Now, you do the exact same thing as at the number “⓶”, but instead you calculate what 40% of 45 is :
45 × 0,4 = 18
⓹ So the second time the number 45 decreased by ⒙ In order to know what the final result is, you need to subtract 18 from 45 :
45 - 18 = 27
→ So the final result is : 27
I hope this helped! ☻