Question

Question 1

1 pts

Justin needs to have 1 and 1/4 kg of flour for baking cupcakes. He found

out that he already has 4/5 kg in the kitchen left last week. How much

more flour does he need?

O 1 kg

O 19/20 kg

09/20 kg

Answer 1

`Needed = (9)/(20)kg`

Explanation:

Given

`Needed\ Flour= 1kg\ \&\ (1)/(4)kg`

Required

How much flour he add to
`(4)/(5)kg` to get the desired amount

We start by adding 1kg to 1/4kg

`Total = 1kg+ (1)/(4)kg`

Take LCM

`Total =(4 +1 )/(4)kg`

`Total = (5)/(4)kg`

Next, we subtract the
`(4)/(5)kg` from the above total

`Needed = (5)/(4)kg - (4)/(5)kg`

Take LCM

`Needed = (25 - 16)/(20)kg`

`Needed = (9)/(20)kg`

Hence; He needs
`(9)/(20)kg`amount of flour