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The expression
62.4 d-210 gives the number of Indian rupees received in exchange for
d US dollars at the local currency exchange. How many Indian rupees are received in exchange for
13US dollars? Round the answer to the nearest whole number.

The expression $62.4 d-210$ gives the number of Indian rupees received in exchange for $d$ US dollars at the local currency exchange. How many Indian rupees are received in exchange for $13$ US dollars? Round the answer to the nearest whole number.

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Compound interest: word problems

Full solution

Q. The expression

62.4 d-210

gives the number of Indian rupees received in exchange for

d

US dollars at the local currency exchange. How many Indian rupees are received in exchange for

13

US dollars? Round the answer to the nearest whole number.

Identify Given Expression: Identify the given expression and the value to be substituted. $\newline$ The expression given is $62.4d - 210$ , where $d$ represents the number of US dollars. We need to substitute $d$ with $13$ to find out how many Indian rupees are received for $13$ US dollars.
Substitute Value: Substitute the value of $d$ with $13$ in the expression. $\newline$ Now we calculate $62.4 \times 13 - 210$ to find the number of Indian rupees.
Perform Multiplication: Perform the multiplication part of the expression. $\newline$ $62.4 \times 13 = 811.2$
Perform Subtraction: Perform the subtraction part of the expression. $\newline$ $811.2 - 210 = 601.2$
Round Result: Round the result to the nearest whole number. $601.2$ rounded to the nearest whole number is $601$ .

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