For the following questions answer them individually
A person first travels towards North $$3\frac{1}{2}$$ km, then he turns left and travel $$1\frac{1}{2}$$ km and then turns towards left and travel for $$3\frac{1}{2}$$ km. How far is he from the starting point ?
$$'+' \rightarrow '\times' , '-' \rightarrow '\div' , '\times' \rightarrow '+' , '\div' \rightarrow '-'$$ then what is the value of $$26 + 10 - 5 \times 7 \div 15 =$$?
