Gabriel needs to purchase at least 30 party decorations. the party palace charges $0.50 per decorative streamer and $0.25 per balloon, including tax. which combination of streamers and balloons can gabriel purchase with $12.50 at the party palace?

X = $0.50
y = $0.25

0.5x + 0.25y = 12.5
x + y = 30
x = 30 - y

0.5(30-y) + 0.25y = 12.5
15 - 0.5y + 0.25y = 12.5
0.25y = 15 - 12.5
0.25y = 2.5
y = 10 (ballons)

x = 30 - 10
x = 20 (streamers)

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to