7183 - you could have saved asking the question by using the built-in calculator in Windows !
200 × 100 ÷ 230 = 86.95%
230 - 155 = 75
.230
200 + 15% = 200*(1.15) = 230
240-10=5x 5x=230 230/5=46 x=46
The normal concentration of cholesterol is between 100 mg/100 mL and 200 mg/100 mL. For 230 mL: 230 mg to 460 mg.
200
About 100-230 times
(190 + 230)/2 = 210190 + 20 = 210 = 230 - 20
230
115
200