Question

colton was out at a restaurant for dinner when the bill came. he wanted to leave a 20% tip. if dinner cost $d$ dollars and cents, which expression represents the cost of dinner plus tip?
answer
$20d$
$0.2d$
$1.2d$
$1.02d$
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Explanation:

Step1: Convert tip percentage to decimal

20% = $\frac{20}{100} = 0.2$

Step2: Calculate total cost factor

Total cost = Dinner cost + Tip = $d + 0.2d = (1+0.2)d = 1.2d$

Answer:

1.2d