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# In a system of units, the units of mass, length and time are called pail, jack, and jill. 1 pail = 5 kg, 1 m = 5 jacks and 24 s make 1 jill. What are the unit of density and speed in the new system?(pails)(jack)−3(pails)(jills)−2(jack)2(jill)(pails)(jack)2

A
(pails)(jack)3
B
(pails)(jills)2
C
(jack)2(jill)
D
(pails)(jack)2
Solution
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#### The unity of density=unitofmass(unitoflength)3=(pails)(Jack)−3

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