Question

what is 10% 0f 30% of 40% of


%?

Answer 1

$\frac{10}{100} \times \frac{30}{100} \times \frac{40}{100}$

$\frac{12000}{1000000}$

$\frac{12}{100}$

$12\%$

Answer 2

Answer:

y=10% of 30% of 40%

y=10% of 30% of 40%CALCULATIONS

y=10% of 30% of 40%CALCULATIONS10% of 30% of 40% can be written as:

y=10% of 30% of 40%CALCULATIONS10% of 30% of 40% can be written as:y=(0.1)×(0.3)×(0.4)

y=10% of 30% of 40%CALCULATIONS10% of 30% of 40% can be written as:y=(0.1)×(0.3)×(0.4)y=

y=10% of 30% of 40%CALCULATIONS10% of 30% of 40% can be written as:y=(0.1)×(0.3)×(0.4)y=0.012 or 12/1000 as a fraction (6/500) or 1.2% as a percentage

PROOF

If y=0.012, then the inverse of the expression (0.1)(0.3)(0.40) returns

If y=0.012, then the inverse of the expression (0.1)(0.3)(0.40) returnsy/(0.3)(0.4)=0.1

If y=0.012, then the inverse of the expression (0.1)(0.3)(0.40) returnsy/(0.3)(0.4)=0.10.012/(0.3)(0.4)=0.1

If y=0.012, then the inverse of the expression (0.1)(0.3)(0.40) returnsy/(0.3)(0.4)=0.10.012/(0.3)(0.4)=0.10.012/(0.12)=0.1 and

If y=0.012, then the inverse of the expression (0.1)(0.3)(0.40) returnsy/(0.3)(0.4)=0.10.012/(0.3)(0.4)=0.10.012/(0.12)=0.1 and0.1=0.1 proves the solution y=0.012 to the factor string ( 0.1)(0.3)(0.4