15.3 per minute
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15.3 is 10% of 153.
I think you mean quarter hours, but in any case you can convert ANY set of data (if it is compatible) using the following formula: Conversion Rate of Unit A to Unit B = Known Unit A/Unknown Unit B You know that .25 hours = 15 minutes. That is the conversion rate (.25 hrs/15 minutes). Now plug in the other values that you know from the problem. .25 hours/15 minutes = .88 hours / ? Minutes (Make sure you have the same units on both the top and bottom!) Now cross-multiply to get rid of the fraction. 13.2 = .25x Now divide by .25 to get x by itself. x = 52.8 minutes Take another example: If you know that 1 inch equals 2.54 centimeters (cm) and what to know how many inches 10 centimeters are. Again use the conversion formula: Conversion Rate of Unit A to Unit B = Known Unit A/Unknown Unit B 1 inch / 2.54 cm = X inches / 10 cm 2.54X = 10 X = 3.94 inches
15.3
0.0654
A unit rate is one in which the second number of the ratio is 1 - in some suitable units. For example, 10 kilometres in 30 minutes can be converted to a unit rate as 20 kilometres per hour or 1/3 km per minute (or however many km per year, etc).