2) A sum of Rs. 280 is to be used to award four prizes. If
each prize after the first is Rs 20 less than its preceding
prize , find the value of each of the prizes.
Answers
Answered by
1
Answer:
100 ,80 ,60, 40
Step-by-step explanation:
The value of 4 prizes form an AP.
d=−20
Sum = 280
2/4 [2a+(4−1)×−20]=280
2(2a−60)=280
a−30=70
a=100
Hence, the value of 4 prizes are Rs. 100, Rs. 80, Rs. 60 and Rs. 40.
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Answered by
1
Answer:
The answers are
1st = Rs. 100
2nd = Rs. 80
3rd = Rs. 60
4th = Rs. 40
Step-by-step explanation:
take the value of the 1st prize as ''x''
x + (x-20) + (x-40) + (x-60) = 280
take all numerical values on the other side and add all Xs.
4x = 280+120
4x = 400
x = 100
So now we can subtract and find the values of all prizes
Verification
add all values and check if it equals to 280
by adding 100+80+60+40
we get 280
so it is the right answer
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