A sum of 700 has to be used to give seven cash prizes to the students of a school for their overall academic performance. If each prize is 20 less than its preceding prize, what is the least value of the prize?

20132Mprelimsupscyear-2013p2csatquantitative-abilitylinear-equation
A.Rs 30
B.Rs 40सही
C.Rs 60
D.Rs 80
व्याख्या एवं हल

सही उत्तर: (B) Rs 40

Let smallest prize be x. Then prizes are: x, x+20, x+40, x+60, x+80, x+100, x+120. Sum = 7x + 420 = 700. Therefore x = 40.

In English (Question & Model Answer)

A sum of 700 has to be used to give seven cash prizes to the students of a school for their overall academic performance. If each prize is 20 less than its preceding prize, what is the least value of the prize?

A.Rs 30
B.Rs 40Correct
C.Rs 60
D.Rs 80

Correct Option: (B) Rs 40

Let smallest prize be x. Then prizes are: x, x+20, x+40, x+60, x+80, x+100, x+120. Sum = 7x + 420 = 700. Therefore x = 40.

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