Question

A sum of Rs 1400 is to be used to give seven cash prizes to students of a school for
their overall academic performance. If each prize is Rs 40 less than its preceding
prize, find the value of each of the prizes.

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Here is your answer.

d= -40

Sn=1400

n= 7

therefore the formula is

Sn = n/2 (2a+(n-1)d)

= 1400= 7/2(2a + 6 x -40)

= 2800= 7(2a - 240)

2800= 14a - 1680

4480=14a

4480/14 = a

320=a

this means that, first prize will be Rs.320, second will be Rs.280, third will be Rs.240 and so on...

i hope you got the answer and if you did, then please mark me as brainliest.

ALL THE BEST FOR 10TH BOARDS.