Shammy saved P 100.00 this week from her allowance. If this amount is P 20.00 more than twice the
amount she saved last week, how much did she save last week?
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Shammy saved P 100.00 this week from her allowance. If this amount is P 20.00 more than twice the
amount she saved last week, how much did she save last week?
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Answer:
The amount saved last week is Php 40.00.
Step-by-step explanation:
Amount saved last week: x
Amount saved this week: 100.00
Basis of equation:
Equation derived:
100 = 20 + 2x
Solve for x, the amount saved last week:
100 = 20 + 2x
100 - 20 = 2x
80 = 2x
2x/2 = 80/2
x = 40
The amount saved last week is Php 40.00.
Check:
100 = 20 + 2(40)
100 = 20 + 80
100 = 100 (True)