Question

argent problem solving the level of sea at 5pm on a day was 50cm above the normal level. it fell by 10cm every day. in how many days will it falls to 20cm below the Normal level? please fast I want to know

Answer 1

Let
A day = 50 cm above normal level
Since it fells 10 cm everyday
So
Day 1 = 40 cm above normal level
Day 2 = 30 cm above normal level
Day 3 = 20 cm above normal level
Day 4 = 10 cm above normal level
Day 5 = At normal level
Day 6 = 10 cm below normal level
Day 7 = 20 cm below normal level...

Hence on 7th day the water will reach 20 cm below the normal level.......

HOPE IT HELPS......