11. 4:16=N:8
a.1
b.2
c.3
d.4
12.N:12=50:60
a.10
b.20
c.30
d.40
13.3:10=9:N
a.30
b.25
c.20
d.15
a.1
b.2
c.3
d.4
12.N:12=50:60
a.10
b.20
c.30
d.40
13.3:10=9:N
a.30
b.25
c.20
d.15
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Answers & Comments
11.) 4:16 = N:8
(4 × 8) ÷ 16
32 ÷ 16
B. 2
12.) N:12 = 50:60
(12 × 50) ÷ 60
600 ÷ 60
A. 10
13.) 3:10 = 9:N
(10 × 9) ÷ 3
90 ÷ 3
A. 30