1.

Some Students Planned A Picnic. The Budget For Food Was Rs. 500. But, 5 Of Them Failed To Go And Thus The Cost Of Food For Each Member Increased By Rs. 5. How Many Students Attended The Picnic?

Answer»

By direction options,500/25=20 ,500/20=25

By mathematical method, the main STEPS are: XY = 500 …(1) and (x−5) (y+5) = 500 …(2),

From eqn. 2, x−y = 5 or y = x−5 PUT in eqn 1, x(x−5) = 500 or x2-5x-500=0 ,

i.e. x = 25 and attended ones = x − 5 = 20

By direction options,500/25=20 ,500/20=25

By mathematical method, the main steps are: xy = 500 …(1) and (x−5) (y+5) = 500 …(2),

From eqn. 2, x−y = 5 or y = x−5 Put in eqn 1, x(x−5) = 500 or x2-5x-500=0 ,

i.e. x = 25 and attended ones = x − 5 = 20



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