3. A restaurant opened at the beginning of May 2019 and served 1,600 customers in the first month that it was open. After some online advertising, they served \( 50 \% \) more customers in June. Then the restaurant received a few bad reviews on Yelp, and the number of customers decreased by \( 25 \% \) in July. How many customers did the restaurant serve in July?

Convert the measurement to the nearest hundredth. (Feel free to use a calculator on this problem) \( 54 \mathrm{f} / \mathrm{sec}=\square \mathrm{mph} \) Submit Question

a) \( \left(\frac{1}{2}+\frac{2}{3}\right)^{2}= \)

12. By selling an article for \( ₹ 1,200 \), a seller incurs a loss of \( 20 \% \). What should be the selling price of the same article if the seller wants to earn a profit of \( 20 \% \).

d) \( \frac{5}{6}+\frac{1}{2} \cdot \frac{5}{3}-\left(\frac{2}{3}\right)^{2}= \)

f) \( 0.4^{3} \cdot 10^{-2} \cdot \frac{2^{3}}{4^{0}} \)