Question

SUBTRACT THE FOLLOWING QUESTION
1. 3/8-2
OPTIONS
a)13/8
b)12/8
c)10/8

MULTIPLY THE FOLLOWING QUESTION
1. 3/5×4/12
OPTIONS
a)2/5
b)1/5
c)1
FIND THE LCM OF THE FOLLOWING QUESTION
1. 6 AND 8
OPTIONS
a)21
b)34
c)24

CONVERT THE FOLLOWING INTO MINUTES
1. 12HOURS
OPTIONS
a)540
b)360
c)720


PLEASE ANSWER THE ABOVE QUESTIONS​

Answer 1

$1) \: Subtract :$

$\frac{3}{8} - 2$

$Take \: LCM = 8$

$( \frac{3 \times 1}{ 8\times 1}) - (\frac{2 \times 8}{1 \times 8} )$

$\frac{3 - 16}{8} = \frac{ - 13}{8}$

Option a

$2) \: Multiply:$

$\frac{3}{5} \times \frac{4}{12}$

$\frac{3 \times 4}{5 \times 12}$

$\frac{12}{60} = \frac{1}{5}$

Option b

$3) \: LCM:$

2 | 6 , 8

2 | 3 , 4

2 | 3 , 2

2 | 3 , 1

3 | 1 , 1

= 2 × 2 × 2 × 3

= 24

Option c

$4) \: Conversion:$

$12 \: hours \: to \: minutes$

$1 \: hour \: = 60 \: minutes$

$12 \: hours \: = 12 \times 60 \: minutes$

$12 \: hours = 720 \: minutes$

Option c