Subtrating by adding up

We need to subtract by adding up: we get 35

Step-by-step explanation:

We need to subtract by adding up:

We will make a number line from 28 till 63 and then jump intervals to reach 63.

We will add those intervals to get the result. That result will be the subtraction of

So, we will add up: 2+10+10+10+3 = 35

So,

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

idk

step-by-step explanation: