Question

1) Sandra drinks one and a half litres of water in a day. How many litres of water does she drink in a week?

Answer 1

Answer:

1) 10.5 litres

2) 15 cups

3) 960 000 millilitres

4) 250 millilitres

Step-by-step explanation:

for 7 days in a week

1.5 = one and a half litres

1.5 * 7 = 10.5

1) 10.5

one point five litres = 1500ml

for 1000 millilitres in 1 litre

one cup = 100 mililitres

1500/100 = 15

15 cups can be filled

800 * 1000

800 000

20 percent = 20 / 100 = 0.2

since it is an increase, + one hole.

20 percent increase = 1.2

800 000 * 1.2 = 960 000

1/4 of a litre = 250

because 1000 / 4 = 250

half a litre = 1/2 * 1000 for larger bottle

= 500

500 - 250 = 250

250 millilitres are left in the larger bottle

Answer 2

Answer:

1. 10.5 liters

2. 1,500 cups of tea

3. 960 milliliters

4. 1/4 a liter

Step-by-step explanation:

1. If there are 7 days in a week, and she drinks 1.5 liters a day, we just multiply 1.5 (liters) x 7 (days) = 10.5 liters

2. There are 1000 milliliters in 1 liter. Multiply 1.5 liters by 1000 milliliters = 1,500 milliliters

3. If you multiply 800 by 0.2 (20%) you will get 160. Then add 160 + 800 = 960 milliliters

4. If you look at the fraction wall I included, you will see how there are 4/4 in 1 liter, and 2/2 in 1 liter. Half of a liter (1/2) is the same as 2/4. If you were to subtract 3/4 from 2/4, you'd get 1/4 left.

Hope that helps!