simplify... 125-18of 2 divide 4+2 multiply 11
Answers
Answer:
Question 3:
Arrange the following fractions in descending order:
(i)
3
4
,
7
8
,
7
12
,
17
24
(ii)
2
3
,
3
5
,
7
10
,
8
15
ANSWER:
We have the following:
(i) The given fractions are
3
4
,
7
8
,
7
12
and
17
24
.
LCM of 4,8,12 and 24 = 24
Now, let us change each of the given fractions into an equivalent fraction with 24 as its denominator.
3
4
=
3×6
4×6
=
18
24
7
8
=
7×3
8×3
=
21
24
7
12
=
7×2
12×2
=
14
24
17
24
=
17×1
24×1
=
17
24
Clearly,
21
24
>
18
24
>
17
24
>
14
24
Hence,
7
8
>
3
4
>
17
24
>
7
12
∴ The given fractions in descending order are
7
8
,
3
4
,
17
24
and
7
12
.
(ii) The given fractions are
2
3
,
3
5
,
7
10
and
8
15
.
LCM of 3,5,10 and 15 = 30
Now, let us change each of the given fractions into an equivalent fraction with 30 as its denominator.
2
3
=
2×10
3×10
=
20
30
3
5
=
3×6
5×6
=
18
30
7
10
=
7×3
10×3
=
21
30
8
15
=
8×2
15×2
=
16
30
Clearly,
21
30
>
20
30
>
18
30
>
16
30
Hence,
7
10
>
2
3
>
3
5
>
8
15
∴ The given fractions in descending order are
7
10
,
2
3
,
3
5
and
8
15
Answer:
139.5it is the correct answer OK bye