y + 18 = 16x =>y=16x-18 0.5x + 0.25y = 36 (multiply both sides by 4) =>2x+y = 144 Substitute y=16x-8
=>2x+16x-8=144 =>18x=152 =>x=152/18=9 y=16x-18 =>y=16(9)-18 =>y=144-18=126 x=9 and y=126
Answer from: Quest
answer:
what is your question that you ask
step-by-step explanation:
Answer from: Quest
36 girls
step-by-step explanation:
the 48 boys is 4 parts of the ratio
divide 48 by 4 to obtain one part of the ratio
= 12 ← 1 part of the ratio
3 parts = 3 × 12 = 36 ← number of girls
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Mathematics, 21.06.2019 14:30
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