Answer:
(2) $2.5 (4)12/13 (6)20/50 (8)0.28
Explanation:
(2)money given-cost of one pencil*number of pencils
$10-$(0.50*15)
=>$10-$(7.5)
$2.5
(4)number of boys=12
Number of girls=13
Ratio of number of boys to number of girls=12/13
(6)number of blue game pieces=20
Number of green game pieces=50
Ratio of blue game pieces to green game pieces=20/50
(8)8*35=280
Number of digits after the decimal point=3
=>0.8*0.35=0.28