Answer:
12) z = 64
15) q = 75
Explanation:
12) 40/65 = z/10⁴
Cross Multiply
65 × z = 40 × 104
65z = 4160
z = 4160 / 65
z = 64
15)32.5/25 = 97.5/q
25 × 97.5 = 32.5× q
q = 25 × 97.5/32.5
q = 2437.5 /32.5
q = 75
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