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Vlada [557]
3 years ago
12

Lisa had 1750 stamps. Mark had 480 fewer stamps than Lisa. Lisa gave some stamps to Mark. Now Mark has three times as many stamp

s as Lisa. How many stamps did Mark have at first? How many stamps does Lisa have now?
Mathematics
2 answers:
FrozenT [24]3 years ago
7 0
L: 1750, M:1750-480=1270
Lisa gave some stamps to Mark so Lisa now has 1750-x and Mark has 1270+x. Mark also has 3 times as many as Lisa now: (1750-x)*3=1270+x
5250-3*x=1270+x
4*x=3980, x=3980/4, x=995
So Lisa gave 995 stamps to Mark.
At first Mark had 1270 stamps. Lisa now has 1750-995=755 stamps.
DanielleElmas [232]3 years ago
6 0
First, let's figure out what amount of stamps Mark originally had.

1750 - 480 = 1270

Mark originally had 1270 stamps.

Now, we have to figure out how many stamps Lisa has.

s = stamps

1270 + s = (1750 - s)3
1270 + s = 5250 - 3s
Add 3s to both sides.
1270 + 4s = 5250
Subtract 1270 from both sides.
4s = 3980
Divide both sides by 4.
s = 995

Now, subtract 995 from 1750.

1750 - 995 = 755

Lisa now has 755 stamps.
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