Question

What is the percent decrease when the balance in a bank account goes from $300 to $60?

Answer 1

Answer:

$80 \%$

Step-by-step explanation:

$300 \times (1-x/100)=60$

$(1-x/100)=60/300$

$(1-x/100)=1/5$

$-x/100=1/5-1$

$-x/100=-4/5$

$x/100=4/5$

$x=4/5 \times 100$

$x=400/5$

$x=80$