Question

One grain of sand is 7x10^-5.How many grains of sand are there in 6300kg

Answer 1

we are given that one grain of sand weighs 7x10^-5 Kg.

There is a total of 6300Kg of sand.

So we will divide the total weight by weight of one grain of sand.

Number of sand
`=(6300)/(7*10^(-5))`

Number of sand
`=(6300*10^(5))/(7)`

Number of sand
`=900*10^(5)`

Hence there are 900x10^5 sands.