3 percent of jennies skin cells were burned when she escaped a fire. if 1.1\times 10^(11) of her skin cells were burned then how many skin cells were not burned?

Answer 1

Find the total number of cells, then subtract from that the number of cells burned. That gives the number of cells not burned.

N = total number of cells

1.1 x 10¹¹ = 0.03N ⇒

N = (1.1 x 10¹¹) / 0.03 = ?

M = number of cells not burned

M = N - (1.1 x 10¹¹)

Plug in the numbers and finish from here.