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RPSC Prelims 2016Prelims 2016Q. 115 of 150
Q. 1151 markMedium
RPSC Prelims 2016·Prelims 2016
Two hundred bulbs are used 4 hours per day and expenditure for 6 days is ₹40. How many bulbs should be used 3 hours per day so that expenditure for 15 days is ₹48?
(a)72
(b)800
(c)128
(d)90