Question

1. a mechanic has 200 quarts of engine oil. if he uses 10 quarts per day, how many days will the oil last? 20
2. a shipment of 84 bar chains arrives at the shop. if they are divided equally among 7 shelves, how many bar chains go on each shelf? 12
3. a shipment of 216 sprockets is divided equally into bins of 18 sprockets each. how many bins are needed? 12

Explanation:

Step1: Calculate days for engine - oil

To find the number of days the oil will last, divide the total amount of oil by the amount used per day.
$200\div10 = 20$

Step2: Calculate bar - chains per shelf

To find the number of bar - chains on each shelf, divide the total number of bar - chains by the number of shelves.
$84\div7=12$

Step3: Calculate number of bins for sprockets

To find the number of bins needed, divide the total number of sprockets by the number of sprockets per bin.
$216\div18 = 12$

Answer:

1. 20
2. 12
3. 12