4. This month Chiz earned only
of his earnings last month. If his earning
last month is P12,600. How much did he earn this month?
5.
In Baguio City a horse ride costs P120.00 per person for the first 30
minutes and P50.00 for every additional 10 minutes. If you spent P270.00
for a horse ride, for how long did you ride?
Answers
Given : In Baguio City a horse ride costs P120.00 per person for the first 30
minutes and P50.00 for every additional 10 minutes
spent P270.00 for a horse ride
To Find : how was long ride?
Solution:
costs P120.00 per person for the first 30 minutes
P50.00 for every additional 10 minutes
Let say additional 10 minutes were n
Then cost for 10n minutes = 50n
Cost for initial 30 minutes = 120
Hence cost for 30 + 10n minutes = 120 + 50n
120 + 50n = 270
=> 50n = 150
=> n = 3
30 + 10n minutes = 30 + 10 (3) = 60 minutes = 1 hrs
This month Chiz earned only 3/4 of his earnings last month.
his earning last month is P12,600.
earn this month = (3/4) 12600 = 9,450
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Given :- In Baguio City a horse ride costs P120.00 per person for the first 30 minutes and P50.00 for every additional 10 minutes. If you spent P270.00 for a horse ride, for how long did you ride ?
Answer :-
Let us assume that, total ride is of x minutes .
so,
→Fixed cost for each person for first 30 minutes cost = P120.00
now,
→ Left time = (x - 30) minutes .
so,
→ Cost for rest every additional 10 minutes = P50.00 .
→ cost for additional 1 minute = (50/10) = P5.00
then,
→ cost for left time = P 5(x - 30) .
A/q,
→ 120 + 5(x - 30) = 270
→ 120 + 5x - 150 = 270
→ 5x - 30 = 270
→ 5x = 270 + 30
→ 5x = 300
→ x = 60 minutes = 1 Hour. (Ans.)
Answer 2) :-
→ Chiz earing last month = P12,600 .
→ Chiz earing this month = (3/4) of earing last month .
so,
→ Chiz earing this month = (3/4) of 12600 = (3/4) * 12600 = P 9,450 (Ans.)
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