// Numbas version: exam_results_page_options {"name": "drip rate macrodrop", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"preamble": {"js": "", "css": ""}, "rulesets": {}, "ungrouped_variables": ["v", "h", "dropfactor", "dpm", "dpmrounded"], "advice": "

\\begin{align}\\text{drip rate (dpm)}&=\\frac{\\text{drops}}{\\text{minutes}}\\\\&= \\frac{\\text{volume (mL)}\\times \\text{drop factor (drops/mL)}}{\\text{hours (hr)}\\times 60 \\text{ (min/hr)}}\\\\&=\\frac{\\var{v} \\text{ mL}\\times \\var{dropfactor} \\text{ drops/mL}}{\\var{h} \\text{ hr}\\times 60 \\text{ min/hr}}\\\\&=\\frac{\\var{v} \\text{ drops}}{\\var{h}\\times 3 \\text{ min}}\\\\&=\\var{dpmrounded} \\text{ drops/min (to the nearest whole number)}\\end{align}

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\\begin{align}\\text{drip rate (dpm)}&=\\frac{\\text{drops}}{\\text{minutes}}\\\\&= \\frac{\\text{volume (mL)}\\times \\text{drop factor (drops/mL)}}{\\text{hours (hr)}\\times 60 \\text{ (min/hr)}}\\\\&=\\frac{\\var{v} \\text{ mL}\\times \\var{dropfactor} \\text{ drops/mL}}{\\var{h} \\text{ hr}\\times 60 \\text{ min/hr}}\\\\&=\\frac{\\var{v} \\text{ drops}}{\\var{h}\\times 3 \\text{ min}}\\\\&=\\var{dpmrounded} \\text{ drops/min}\\end{align}

", "tags": [], "extensions": [], "variablesTest": {"condition": "", "maxRuns": 100}, "name": "drip rate macrodrop", "variable_groups": [], "statement": "

Evaluate the following without using a calculator.

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If you are unsure of how to do a question, click on Reveal answers to see the full working. Then, once you understand how to do the question, click on Try another question like this one to start again.

", "functions": {}, "parts": [{"type": "gapfill", "marks": 0, "prompt": "

$\\var{v}$ mL of a fluid is to be infused over $\\var{h}$ hours using a macrodrop giving set which delivers $\\var{dropfactor}$ drops/mL. Calculate the required drip rate in drops per minute.

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[[0]] dpm (to the nearest whole number)

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