13.A student had 5 months for public exam.if he wastes half an hour everyday
in facebook during 1 month and 1 hour every day during 2nd month and
one and half hour during 3rd month and so on.find the total number of
hours he wasted in 5 months.(consider 1 month=30days)
(by A.P.)
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Answer:225 hrs
Step-by-step explanation:
For first month,
Total hours wasted=1/2*30=15 hrs
For second month,
Total hours wasted=1*30=30 hrs
For third month,
Total hours wasted=1 1/2*30=3/2*30=45 hrs
For forth month,
Total hours wasted=2*30= 60 hrs
For fifth month,
Total hours wasted=2 1/2*20= 5/2*30=75 hrs
Total hours wasted= 15+30+45+60+75=225 hrs
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