A sofa is on sale for $816, which is 15% less than the regular price. What is the regular price?

100 - 15 = 85

816 = 85%

now work out 1%.

85/85 = 1% do the same to the other side

816/85 = 9.6

9.6 = 1%

now find 100%

1 X 100= 100%

9.6 X 100=960

regular price $960

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.