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Martin is saving to buy a bike - Junior Cycle Mathematics - Question 1 - 2018
Question 1
Martin is saving to buy a bike. He has €100 saved to begin with. He saves another €20 each month. (i) Work out how much in total Martin will have saved after 4 mont... show full transcript
Worked Solution & Example Answer:Martin is saving to buy a bike - Junior Cycle Mathematics - Question 1 - 2018
Step 1
Work out how much in total Martin will have saved after 4 months.
Answer
To calculate how much Martin saves in total after 4 months, we need to add his initial savings to the savings from the 4 months:
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Initial savings: €100
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Monthly savings: €20
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Amount saved over 4 months:
€20 imes 4 = €80
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Total savings after 4 months:
€100 + €80 = €180
Thus, Martin will have saved a total of €180 after 4 months.
Step 2
Work out how many months in total Martin must save for in order to have enough money to buy the bike.
Answer
The bike costs €240. To find out how many months Martin needs to save in total:
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Calculate the remaining amount after the initial savings:
€240 - €100 = €140
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Divide the remaining amount by the monthly savings:
€140
€20 = 7 months
Thus, Martin must save for a total of 7 months to afford the bike.
Step 3
Work out how much money Lisa saves each week.
Answer
Lisa is saving for a laptop that costs €320. After 18 weeks, she will have enough money. We can set up the following:
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Calculate how much money Lisa needs to save:
€320 - €50 = €270 (this is the amount she needs after her initial savings)
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Divide this amount by the number of weeks:
€270 / 18 = €15
Therefore, Lisa saves €15 each week.