Question

Mary bought 3 1/2 m of lace. She used 1 34 m of lace for her new dress. How much lace is left with her?

Answer 1

Answer:

Step-by-step explanation:

Lace bought by Mary =3 1/2m

Lace she used=1 3/4m

Lace left=3 1/2-1 3/4

=7/2-7/4

( You can use cross multiplication or LCM)

=28-14/8

=14/8 =1 6/8

Answer 2

Step-by-step explanation:

Mary bought 3

2

1

m of lace

She used 1

4

3

m of lace for her new dress

left lace = bought 3

2

1

m of lace - used 1

4

3

m of lace

⇒3

2

1

m−1

4

3

m=

2

(2×3)+1

m−

4

(1×4)+3

m=

2

6+1

m−

4

4+3

m

⇒

2

7

m−

4

7

m=

2×4

(7×4)−(7×2)

m=

8

28−14

m

⇒

8

14

m=

8÷2

14÷2

m=

2

7