18% of 400 is 72
Hope it helped
I think the first one is right !.... but the for the other one it's B .
Body cells perform mitosis in which they copy there chromosome prior to division, then dividing once, keeping there number of chromosomes, these are referred to as diploid cells. Sex cells perform meiosis where they double there chromosomes then divide twice, creating 4 cells, each containing half the chromosomes. These are referred to as haploid cells. The answer choice is choice 2. Hope I helped!
The key to solving this problem is to found how much the weight of glycerol needed to make the solution. The calculation would be:
weight= volume* concentration
weight1= weight2
volume1 * concentration1 = volume2 * concentration2
200ml * 20%= volume2 * 100%
volume2= 200ml * 20/100
volume2= 40ml