Answer:
x + Y = 39 or x = 39-y
20x + 50y = 1.40
20 (39 - y) + 50y = 11.40
7.80 - 20y + 50y = 11.40
30y = 11.40 - 7.80
30y = 3.60
y = 3.60/30
y = 12 50p coins were collected.
x = 39 - 12 = 27 20p coins were collected.
Proof:
20*27 + 50*12 = 11.40
5.40 + 6 = 11.40
11.40 = 11.40
I hope it helps.
44.8 × 5.1 = 228.48
anything to ask please pm me
Answer:
its C and please turn your browser to dark mode
Step-by-step explanation:
20x0,042+0,05=0,89
I’m sorry luv I’m not good at math problems :(
Answer:
$12$ km
Step-by-step explanation:
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