Question

On March 8, 2017, one South African rand was worth 0.08 U.S. dollars.(a) On that date, how many dollars was 168.18 rand worth?Round your answer to the nearest hundredth of a dollar.dollars(b) On that date, how many rand was 59.09 dollars worth?Round your answer to the nearest hundredth of a rand.I need help with these two problems.

Answer 1

Given: The conversion rate below

`1(rand)=0.08(dollars)`

To Deteremine: The worth of 168.18 rand in dollars

Solution

`\begin{gathered} 1(rand)=0.08(dollars) \\ 168.18(rand)=x(dollars) \end{gathered}`

Let us cross multiply

`\begin{gathered} x*1=0.08*168.18 \\ x=13.4544 \\ x\approx13.45(nearest-hundredth) \end{gathered}`

Hence, worth of 168.18 rand in dollars is approximately 13.45 U.S. dollars

(b) To Determine: How many rand was 59.09 dollars

`\begin{gathered} Recollect \\ 1(rand)=0.08(dollars) \\ y(rand)=59.09(dollars) \end{gathered}`

Let us cross-multiply

`\begin{gathered} 0.08* y=1*59.09 \\ 0.08y=59.09 \\ y=(59.09)/(0.08) \\ y=738.625 \\ y\approx738.63(rand) \end{gathered}`

Hence, 59.09 dollars is worth approximately 738.63 rands