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lolo:
i have another question plz:

there were 1240 tickets sold for a concert. Of these, 780 were sold at $24.50 each, while the remainder were sold at a reduction of 20%. Find the total money taken in ticket sales.

thanks :)

astarmathsandphysics:

--- Quote from: lolo on February 05, 2009, 12:11:37 pm ---i have another question plz:

there were 1240 tickets sold for a concert. Of these, 780 were sold at $24.50 each, while the remainder were sold at a reduction of 20%. Find the total money taken in ticket sales.

thanks :)

--- End quote ---
(780x24.5)+ 0.8x(1240-780)x24.5=28136

lolo:
thanks .. bt i reli dnt get what u did  ???.. cn u plz explain
thanks :)

astarmathsandphysics:
780 sold at 24.50 so revenue =780x24.5=19110

The remainder have a discount of 20% iethey cost 24.50x0.8=19.60. There are 1240-780=460 of these so revenue =19.60x460=9016

Total revenue =19110+9016=28126

omarsubei:
Please help me with this question and explain to me why the answer is what it is:

A force of magnitude F1 accelerates a body of mass m from rest to a speed v. A force of
magnitude F2 accelerates a body of mass 2m from rest to a speed 2v.
The ratio: (work done by F2)/(work done by F1) is:

A. 2.
B. 4.
C. 8.
D. 16.

Thanks

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