# please help me with these questions in mathematics................................1.Mr.Harikishan is out of station for seven days.He returns home on monday morning.He observes a snail making its way up the wall of your cabin.Each day,it carefully works its way 2.5m up the wall.At night,though,it slips back down 1 metre.The cabin wall is 9 m high.If the snail started on monday,when will it reach the top of the cabin wall ?a)Friday morning 2)saturday evening 3)Thursday morning 4)monday morning2.A log of wood has 33 kg weight.A group of termites started eating it.Everyday , these termites eat 10000 mg of wood.In how many days will the group of termites eat the whole log of wood?a) 3300 days b)33 days c)303 days d)330 days

2
by anumitha

2014-11-03T16:37:38+05:30
Ans2)
1 kg =1000000 mg
so 33 kg=33000000mg
total days=wt.of wood/wt.of daily loss
days=33000000/10000
ans....3300  option A
ans1)total distance in one night and day=2.5-1=1.5m
total days required=total distance/distance in one night and day
=9/1.5
=6days....

2014-11-03T16:41:55+05:30
1. saturday evening

net distance covered in each day = 1.5m

after 5th day, distance covered = 1.5 * 5 = 7.5m

on 6th day it covers 1.5m in day time & reaches the top..

2.
3300 days

10000mg = 0.01kg

33kg = (33/0.01) days = 3300days