The earnings of a hawker for three days were 175, 5200, 5225 respectively.
7th day
(i) If the earnings of the hawker follows the same pattern, then his earning on
will be
(a) 305
(b) 3330
(c) 325
(d) 360
(ii) On which day the hawker will earn 450?
(a) 8th day
(b) 12th day (c) 11th day
(d) 15th day
Answers
Given : The earnings of a hawker for three days were 175, 200, 225 respectively.
the earnings of the hawker follows the same pattern,
To Find : his earning on 7th day
(a) 305
(b) 330
(c) 325
(d) 360
(ii) On which day the hawker will earn 450?
(a) 8th day
(b) 12th day
(c) 11th day
(d) 15th day
Solution :
175, 200, 225
a = 175
d = 25
earning on 7th day = 175 + (7 - 1)25
= 175 + 6(25)
= 175 + 150
= 325
earning on 7th day = 325
hawker will earn 450
=> 450 = 175 + (n - 1)25
=> 18 = 7 + (n - 1)
=> 11 = n - 1
=> n = 12
12th day the hawker will earn 450
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