Question

In March, Delphine's house had 40\%40% more snowfall than in February. Delphine's house had ff centimeters of snowfall in February.

Which of the following expressions could represent how much snowfall Delphine had at her house in March?

Answer 1

1.4f and 4/10f +f

Explanation:

40%⋅f+f

​

=

10

4

​ f+f

=0.4f+f

=0.4f+1f

=(0.4+1)f

=1.4f

​

Hint #55 / 5

The expressions \dfrac{4}{10}f+f

10

4

​ f+fstart fraction, 4, divided by, 10, end fraction, f, plus, f and 1.4f1.4f1, point, 4, f each could represent how much snowfall Delphine had at her house in March.

Answer 2

1.40f

Explanation:

Amount of snowfall in February = f cm

1) Amount of snowfall in March = 40% more snowfall than in February

= Amount of snowfall in February + 40% of snowfall in February

= f + 40% of f

2) 40% is converted into decimal as 0.40 and the term 'of' translates to a multiplication mathematically

So, we get

Amount of snowfall in March = f + 0.40*f

3) Simplifying the above expression, we get

f+0.40f

= f (1+0.40) [factor out the f from both the terms]

= f(1.40)

Amount of snowfall in March = 1.40f