Step-by-step explanation:
1. Convert both units in each problem to be the same.
ex: make 70c of $3.50 to $0.7 of $3.50 or 70c of 350 c
2. remember that 'of' means multiply
ex: $10 of $20 so 20 × y = 10 so it is 0. 5 or 1/2 which is the same as 50% (y is being used as a variable to show an unknown value)
Let's try one!
$2.50 of $10
$10 × y = $2.50
(divide both sides by 10)
y = 0.25 so that means it is 25%
So the answer for b is $2.50 is 25% of $10
