Hi ozoraozora wrote:need some guide.

Mary had some beads. 2/5 of her beads were black and 1/10 of her beads were blue.

the remaining beads were red.

Mary used all her red beads to decorate some purse. The number of red beads used for each purse was 1/8 of the total number of beads. How many purses were decorated/

thanks

Good Morning.

Please check your source for the last sentence.

For this question, use a common multiple of 40u (5, 10 and 8).

2/5 of her beads were black ----- 16u

1/10 of her beads were blue ----- 4u

The remaining beads were red ----- 20u

The number of red beads used for each purse was 1/8 of the total number of beads. ----- 5u

I am taking the question as number of purses decorated with red beads.

Number of purses decorated with red beads ----- 20/5 ----- 4.

The slide is meant to be a guide, I'll leave it to your kid to fill out the details.

Besides MD, you may also use solve this question using fractions.

1 – 2/5 -1/10 ----- 1/2

1/2 /1/8 ----- 4 (number of purses decorated with red beads )

Hope this helps.

Best wishes