22. 1000
23. 52.5
24. $325119.68
25. $4.77 ( you can approximate it to 5 dollars if you want)
22) 16= 1.6% × some number we'll call x
16=1.6%x
x = 16/ 1.6%
= 1000
or
16= 1.6/100 × x
x = 16/(1.6/100)
x = 16 × (100/1.6)
x = 1000
23)
500% × 10.5
500/100 × 10.5 = 52.5
24) 10566.40 =3.25% of x
x =10566.40 /3.25%
= 10566.40 × (100/3.25)
x = 325119.68
25. I'm assuming you add tips.
15% of 31.77 = $4.77