tolong bro pLzzzz 15 poin dah ruhhh

Mapel Matematika
Bab Perbandingan

1.
A = 1 1/4 B
A = 5/4 B
A/B = 5/4

2.
A = 1 2/5 B
A = 7/5 B
A/B = 7/5
14/B = 7/5
70 = 7B
B = 10

3.
A = 125% B
A/B = 125/100
A/B = 5/4

4.
A = 120% B
A/B = 120/100
A/B = 6/5
A/25 = 6/5
A = 25 X 6/5
A = 30

1)...
A = 1 1/4 B
A = 5/4 B
A / B = 5 / 4 ✔️

2)...
A = 1 2/5 B
A = 7/5 B
7/5 B = A
7/5 B = 14
7 B = 14 × 5
7 B = 70
B = 70 / 7
B = 10 ✔️

3)...
A = 125% B
A = 125 / 100 B
A / B = 125 / 100
A / B = 5 / 4 ✔️

4)...
A = 120% B
A = 120 / 100 B
A = 6 / 5 ×25
A = 150 / 5
A = 30 ✔️

Semoga bermanfaat.....
-Prisco