Question

Benji supplied $60\frac{1}{2}L$of water to the swimming pool every half hour. What is the quantity of water supplied by him in mL? $(1L=1,000mL)$

• A. 10,500 mL
• B. 30,500 mL
• C. 40,500 mL
• D. 60,500 mL

Answer 1

The correct option is D 60,500 mL

Water supplied $=60\frac{1}{2}L$

• $60\frac{1}{2}L$ has $60L$ and $\frac{1}{2}L.$
• We need to convert $60L$ and $\frac{1}{2}L$ into mL to get the whole quantity in mL.
• $1L=1,000mL$
• To get the quantity in mL, multiply $60L$ with $1,000$ (as $1L=1,000mL$ ).
• $60\times 1,000=60,000mL.$
• Thus, there are $60,000mLin60L.$
• To get the quantity in mL, multiply $\frac{1}{2}L.$ with $1,000(as1L=1,000mL).$
• $\frac{1}{2}\times 1,000=500mL.$
• Thus, there are $500mL$ in $\frac{1}{2}L.$
• Now, the quantities $60L$ and $\frac{1}{2}L.$ are in mL. We can add them directly.
• Total supplied water $=60,000mL+500mL=60,500mL.$

Hence, the quantity of water supplied by Benji is $60,500mL.$