(67.85-11.5 * 0.0) / 5.75 simple calculation 40% * (9.5 + 9.5 + 9.5 + 9.5 + 9.5)

(67.85-11.5 * 0.0) / 5.75 simple calculation 40% * (9.5 + 9.5 + 9.5 + 9.5 + 9.5)


40%*(9.5+9.5+9.5+9.5+9.5)
=40%*5*9.5
=2*9.5
=19



86 × 2 / 85


86×2/85
=(85+1)×2/85
= 2 +2/85
=2 and 2 / 85



85 times 85 out of 86


(85 + 1) * 85 / 86-1 * 85 / 86 = 85-85 / 86 = 84 and 1 / 86
Do you understand? It's a bit confusing. It's 85 plus 1 to make 86, and then it's multiplied by 85 / 86, and finally it's subtracted from 85 / 86