Maths

Question

1. James bought a book which costs $P. He got a change of $12 from $120 for that book. how much does a book cost ?

2. 1 5/6 x 1/3 -:- 4/9

3. 2/7 -:- ( 3/5 x 1/6 )

4. 1 1/4 x 12

Answer 1

1. $p +$12 = $120
$P=$120-$12
= $108

2. 1 5/6 x 1/3 -:- 4/9
=11/6 x 1/3 x 9/4
=11/8
=1 3/8

3. 2/7 -:- ( 3/5 x 1/6 )
= 2/7 -:- (1/10)
=2/7 x 10/1
=20/7
=2 6/7

4. 1 1/4 x 12
=5/4 x 12
=15

Answer 2

1./P=$120-$12
P=$108
∴A book cost $108

2./1 5/6*1/3÷4/9
=11/6*1/3÷4/9
=11/18÷4/9
=11/18*9/4
=1 3/8

3./2/7÷(3/5*1/6)
=2/7÷1/10
=2/7*10
=2 6/7

4./1 1/4*12
=5/4*12
=15