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Rajani was out at a restaurant for dinner when the bill came. She wanted to leave a
28% tip. If dinner cost
d dollars and cents, which expression represents the cost of dinner plus tip?

1.028 d

1.28 d

0.28 d

28 d

Rajani was out at a restaurant for dinner when the bill came. She wanted to leave a $28 \%$ tip. If dinner cost $d$ dollars and cents, which expression represents the cost of dinner plus tip? $\newline$ $1.028 d$ $\newline$ $1.28 d$ $\newline$ $0.28 d$ $\newline$ $28 d$

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Evaluate two-variable equations: word problems

Full solution

Q. Rajani was out at a restaurant for dinner when the bill came. She wanted to leave a

28 \%

tip. If dinner cost

d

dollars and cents, which expression represents the cost of dinner plus tip?

\newline

1.028 d

\newline

1.28 d

\newline

0.28 d

\newline

28 d

Calculate Total Cost: To calculate the total cost including the tip, we need to add the tip to the original cost of the dinner. The tip is $28\%$ of the dinner cost, which can be represented as $0.28 \times d$ . To find the total cost, we add the original cost $(d)$ to the tip $(0.28d)$ . $\newline$ Calculation: $d + 0.28d$
Combine Like Terms: Combining like terms, we add $1d$ (the cost of the dinner) to $0.28d$ (the tip) to get the total cost. $\newline$ Calculation: $1d + 0.28d = 1.28d$
Total Cost Expression: The expression $1.28d$ represents the total cost of the dinner including a $28\%$ tip.

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