Answer :
2 to 5 is like 4 to 10 so if you put 10 to 1000 and 4 to 400
it will be 400+870=1270
the answer is 1270
it will be 400+870=1270
the answer is 1270
The amount spent on postage will be 580.
How to calculate the value?
Let P = postage
Let s = supplies
p = s - 870 ,... i
The second equation will be:
2s = 5p .....
Substitute the values
2s = 5p
2s = 5(s - 870)
2s = 5s - 4350
5s - 2s = 4350
3s = 4350.
s = 4350/3
s = 1450
The amount spent on postage will be:
= 1450 - 870
= 580
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