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.
1/5 of 200 is 40 which mean she gave 40 away and she has a 160 left
Just subtract the following number from the preceding one.
48- 3= 45
3- 45= -42.
Step-by-step explanation:
p(R)=18/48 is the probability of the question
Answer:
60
Step-by-step explanation:
200*0.30=60
Multiply the percent's by the total cost.
