I did these without a calculator.
1.The price of a carpet is reduced by 20% in the sales. It now costs $60. What was the pre-sale price?a.$75
2.A car costs $12 000 when bought new. It depreciates at an annual rate of 10%. Find the value at the end of the second year.a. $9720
4.In how many years do $250 invested at the rate of 8% per annum simple interest amount to $330?a.4yrs
5.In an exam li secured 372 marks. If she secured 62% marks, find the max marks?a.600
6.Expand (4x-1) (3x+5)-(2x-4)^2 (it’s squared)a.8x^2+33x-21
9.1/3(2/5-1/4)divided by 3/7a.7/60
10.(pq-5)(pq+5)p^2q^2-25
11.A student borrows $600 to buy a computer. Interest is added to the loan at the rate 5%per annum. How much dose he own after 2 yrs?a.$541.50
12.A joint of meat orginally weighs 4kg. After cooking the weight reduced to 3.4kg. Find the percentage cost.a.15%
14.What is the % saving on this sofa? sofa $1150 previs $2500.a.54%
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*Please dnt write rude remarks! I’m not cheating.