Two sisters open saving accounts with $60 each that their grandmother gave them. the first sister adds $20 each month to her account. her sister adds $40 every two months to her $60. if the sisters continue to make deposits at the same rate, when will they have the same amount of money?

Second month with $100 savings each

Step-by-step explanation:

Opening savings= $100 each

Additional savings

Sister 1 deposit = $20/month

Sister 2 deposit= $40 every 2 months.

First month= opening savings+ additional savings

Sister 1= $60+$20= $80

Sister 2=$60+$0= $60

Second month=

Total month savings+ additional deposit

Sister 1=$80+$20=$100

Sister 2=$60+$40=$100

At the end of the second month, the both have $100 each

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

step-by-step explanation:

if you want to separate 54 into 6 individual tiers then you need to divide if you want to separate 54 into 6 individual tiers then you need to divide 6 and 54.

if you divide 9 by 6 you will get 54.

- hope i .