Уроки математики и физики (RU + UA)

воскресенье, 1 января 2017 г.

Test 2. Compound interest-type problems

 1. A new car is bought for £23000. Each year, its value depreciates (goes down) by 15% of its value at the start of the year. How much is the car worth after 3 years?  

 а) £14,125.18 ;     
 b£14,124.60;     
 c£14,126.68;     
 d)  £14,124.88.

 2. The population of a country decreases by 4% of its size at the start of every year. If the population is 8 million, what will it be after 3 year?

 а)  7,077.888;     
 b7,077.868;     
 c7,078.866;     
 d7,074.634.

 3. A bacteria culture starts with 4000 bacteria. Each hour the number of bacteria increases by 20%. How many bacteria will there be after 3 hours?

 а)  6914;      b)  6922;     
 c)  6912;      d)  6916.

 4. Mohammed puts £200 in a bank at 6% p. a. (per annum) compound interest. Geena puts £210 in a bank at 4% p. a. compound interest. What will have more money in the bank after 2 years?

 а)  ;      b)  Geena;     
 c)  ;      dMohammed.

 5. Mohammed puts £200 in a bank at 6% p. a. (per annum) compound interest. Geena puts £210 in a bank at 4% p. a. compound interest. How much more?

 а£2.46;      b£2.84;     
 c)  £2.42;      d£2.22.

 6. £800 is put in a bank with 10% p. a. (per annum) compound interest. Work out the total money in the bank after 3 years (use percentage multiplier 1.1).

 а)  £1064.80;     
 b£1068.80;     
 c£1065.45;     
 d£1064.60.

 7. £800 is put in a bank with 10% p. a. (per annum) compound interest. How much money is in the bank after 5 years?

 а£1288.53;     
 b)  £1288.41;     
 c£1286.45;     
 d£1289.49.

 8. £800 is put in a bank with 10% p. a. (per annum) compound interest. How much money is in the bank after 10 years? (just multiply £800 by 1.1 ten times)

 а)  £2074.99;     
 b£2076.89;     
 c£2074.66;     
 d£2075.50.

 9. Another bank pays 7% p. a. compound interest. If you put in £400, how much money would be in the bank after 2 years?

 а£457.96;     
 b)  £457.96;     
 c£457.96;     
 d£457.96.

10. Another bank pays 7% p. a. compound interest. If you put in £400, how much money would be in the bank after 3 years?

 а)  £490.02;      b£494.02;     
 c£492.20;      d£490.12.

11. Another bank pays 7% p. a. compound interest. If you put in £400, how much money would be in the bank after 5 years?

 а£560.20;      b£562.12;     
 c)  £561.02;      d£561.24.

12. A building society offers 4.7% p. a. compound interest. If you put £1200 into the building society, how much would you have 3 years later?

 а£1378.44;     
 b£1376.20;     
 c£1377.48;     
 d)  £1377.28.

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