math unit9 consumer arithmetic

Unit 9Consumer Arithmetic

Presentation 1 Buying

Presentation 2 Hire Purchases

Presentation 3 Earning

Presentation 4 Money Exchange

Presentation 5 Savings

Presentation 6 Increasing Value


Buying

a)Calculate the TOTAL amount a customer pays for the TVb)The sale price of $1600 is 20% LESS THAN the original price. Calculate the ORIGINAL price

Solutiona) Total amount paid

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b) The sale price of $1600 is 20% LESS THAN the original price. Calculate the ORIGINAL priceSolutionb) If original price is $p, then

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Buying

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Hire Purchases

A printer is advertised for sale at J$84 000. A discount of 12% is given if it is bought for cash. Its can also be bought on hire purchase by paying a deposit of J$29 400 followed by 24 monthly payments of J$ 2300 each.

Calculatea)The cash priceb)The hire purchase pricec)The amount saved by buying the printer for cash rather than on hire purchaseSolutiona) Cash price

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A printer is advertised for sale at J$84 000. A discount of 12% is given if it is bought for cash. Its can also be bought on hire purchase by paying a deposit of J$29 400 followed by 24 monthly payments of J$ 2300 each.

Calculatea)The cash priceb)The hire purchase pricec)The amount saved by buying the printer for cash rather than on hire purchaseSolutionb) Hire purchase price

c) Amount saved by paying cash

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Hire Purchases









Earning

BASIC WEEKTime Wages

40 hours J$32000

Overtime is paid at 50% extra per hour.

Calculatea)The basic hourly rateb)The overtime hourly ratec)The total wages for a worker who worked 10 hours overtime in one week

Solutiona) Basic hourly rate

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40 hours J$32000



Solutionb) Overtime hourly rate

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40 hours J$32000



Solutionc) Total wages

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Earning









Money Exchange

How much would you get for exchanginga)£15 sterling into Jamaican dollarsb)J$3000 into pounds sterlingc)$300.00 US into Jamaican dollars

Solution

a)

b)

c)

Currency Exchange RatePound Sterling £ 130 J$

US $ 90 JS

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Money Exchange









Savings

In how many years would $100, invested at 5% per annum simple interest, amount to $160?The interest in one year

The total amount of interest needed is

So the number of years required is??

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Savings









Increasing Value

An antique is valued at J$4000. Its value increases by 5% each year for 3 years.a)Find the value after two yearsb)Show that the value after three years is J$4630∙50Solutiona)After one years the value is

After two years, its value is

b) Its values after 3 years is

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Increasing Value








math unit9 consumer arithmetic

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