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 morning
2.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