multiply: 28×5\\frac{11}{14}\na 145\\frac{11}{14}\nb 164\nc 162\nd 140\\frac{11}{14}

multiply: 28×5\\frac{11}{14}\na 145\\frac{11}{14}\nb 164\nc 162\nd 140\\frac{11}{14}

multiply: 28×5\\frac{11}{14}\na 145\\frac{11}{14}\nb 164\nc 162\nd 140\\frac{11}{14}

Answer

Explanation:

Step1: Convert mixed - number to improper fraction

$5\frac{11}{14}=\frac{5\times14 + 11}{14}=\frac{70+11}{14}=\frac{81}{14}$

Step2: Multiply whole - number by fraction

$28\times\frac{81}{14}=\frac{28\times81}{14}$ Since $28\div14 = 2$, then $\frac{28\times81}{14}=2\times81 = 162$

Answer:

C. 162