Your friend Veer wants to participate in a 200m race. He can currently run that distance in 51 seconds and with each day of practice it takes him 2 seconds less. He wants to do in 31 seconds. (i) . Which of the following terms are in AP for the given situation *
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Answers
Answer:
Your answer is b ) 51 , 49 , 47
Given : Your friend Veer wants to participate in a 200m race.
He can currently run that distance in 51 seconds and with each day of practice it takes him 2 seconds less.
He wants to do in 31 seconds.
To Find : Which of the following terms are in AP for the given situation
a) 51,53,55
b) 51, 49, 47
c) -51, -53, -55
d) 51, 55, 59
Solution:
a = First term = 51 secs
reduce time daily by 2secs
d = - 2
last term = 31
31 = 51 + (n - 1)(-2)
=> 10 = n - 1
=> n = 11
11 Terms
51 , 49 , 47 , 45 , 43 , 41 , 39 , 37 , 35 , 33 , 31
from the give option :
51, 49, 47 terms are in AP for the given situation
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