Really Simple Maths Question?

Question

1. Your wife wants you to clean the house with the vacuum cleaner. The surface of the area is 120 sq.mtr.
It takes you 40 seconds to clean 1 sq.mtr.
How long (in hours and minutes) will it take you to clean 95 sq.mtr?

2. A 1 ltr. bottle of Coke costs $1.50.
A 2.5 lrt coke costs $3.85
You purchase 12 ltrs. of Coke at the cheapest possible price.
What are you going to buy?

3. 2 2/3 + 4 3/4 (Quarters) + 5/6 =
Answer as a fraction:
Answer as a decimal fraction:

4. 1 3/4 (Quarters) + 1/2 + 2/3 =
Answer as a fraction:
Answer as a decimal fraction:

1/2 + 3/4 (Quarters) + 1/3 =
Answer as a fraction:
Answer as a decimal fraction:

Thank you for helping me with this! I'm in grade 3 and I needed some help with my studying. I couldn't ask my mum and dad cause there away on business trip.

Answer 1

1.
4800 minutes or 80 hours.

2.
12 1ltr bottles.

3.
33/4
8.25

4.
31/12
2.583333333....

5.
19/12
1.583333333....

Answer 2

Question one I believe is a fairly straight up question even though we didn't need the part about the wife or the ttol area of the house. The answer is 3 hrs 3min and 20sec

The rest of your questions cannot be answered by me until we clear up a few things 1) I notice that you say a 1 ltr. bottle and a 2.5lrt coke. Not a 1ltr bottle and then a 2.5ltr bottle. So I ask is the question supposed to be,"a 1ltr bottle of coke cost $1.50 and a 2.5ltr bottle of coke cost $3.85 blah blah blah.

In the following 3 questions is (quarters)=(.25) I'm guessing that it is and in which case question # 3 would look like this
2 2/3 + 4 3/4(.25)+5/6=

Oh by the way I ran into your parents, they are really in disneyland. They didn't want to tell you because they felt bad that you had to stay home and work on your third grade math

Answer 3

1. 1 hour, 3 1/3 minutes (or 3 minutes, 20 seconds).

2. 12 one ltr. bottles.

3a. Mixed: 8 1/4, Improper: 33/4
3b. 8.25

4a. Mixed: 2 11/12, Improper: 35/12
4b. 2.916~

5a. Mixed: 1 1/2, Improper: 3/2
5b. 1.5

#4 seems to be different from the others in that the decimal form creates repeating values. Was this problem written correctly?

Answer 4

1) 4 hours and 20 min
2)12 of 1 ltr. bottle of coke
number 3, 4 and 5 u can simply do it with calculator...anyway..good luck

Answer 5

those are the equations you're able to be employing: 2x+3y=33 3x+2y=31 Use removing to unravel for x and y. Multiply each and each through a extensive type which will cancel out a variable. subsequently, x is canceled -3(2x+3y=33) +2(3x+2y=31) -6x-9y=-ninety 9 + 6x+4y=sixty two = -5y=-37 so y=7.4 Plug fee of y (7.4) into the two equation to get fee of x 2x + 3(7.4)=33 ...2x=33-22.2 ...x=5.4 So, the respond is the binders fee $7.40 slightly and the staplers fee $5.40 slightly

Answer 6

1. 4800sec=1 1/3 hours or 1 hour 20 minutes
2. 12 x 1ltr
3. 8.25 = 33/4
4. 2.91666 = 35/12
5. 1.58333 = 19/12

Answer 7

simple question but many