Percent problems

1003083307

Level:

Amount of

3000

zlotys was paid to bank

A

for interest-bearing investment of

p %

per year. Amount

4000

zlotys was paid to bank

B

, where the interest rate is by

2

percentage points higher than in bank

A

. After one year, the interest earned in both banks amounted to

360

zlotys. What was the interest rate

p

4 %

4.5 %

5 %

2 %

1003083308

Level:

Company

A

had a turnover by

50 %

higher in the second quarter than in the first quarter. In the third quarter its turnover decreased by

20 %

and in the fourth quarter the turnover decreased by another

20 %

. What was the turnover of company

A

in the second quarter, if in the fourth quarter it amounted to

1440000

zlotys?

2250000

zlotys

1500000

zlotys

1800000

zlotys

2000000

zlotys

1003090501

Level:

Amongst

400

people surveyed,

65 %

of them speak fluent English,

47 %

speak French and

24 %

speak both languages. How many of them do not know any of these languages?

48

people

50

people

88

people

58

people

1003090502

Level:

Find the number

x

60 %

of its double is

30 %

of the number

x + 5

1 \frac{2}{3}

1.67

1.6

1 \frac{1}{3}

1003090503

Level:

The total weight of two alloys is

800 kg

. In the alloy containing

4.5 %

of lead (Pb) there is by

19 kg

of lead more than in the other, containing

4 %

of lead. How many kilograms of lead is in each of these alloys?

8

kilograms (

4 %

Pb) and

27

kilograms (

4.5 %

Pb).

18

kilograms (

4 %

Pb) and

37

kilograms (

4.5 %

Pb).

36

kilograms (

4 %

Pb) and

55

kilograms (

4.5 %

Pb).

10

kilograms (

4 %

Pb) and

29

kilograms (

4.5 %

Pb).

1003090504

Level:

Interest on two construction loans of the total value of

100000

zlotys amounts to

3.150

zlotys a year with the interest rate on one of the loans being

3 %

and the other

3.5 %

. Calculate the amount of each of these loans.

70000

zlotys of

3 %

interest rate loan and

30000

zlotys of

3.5 %

interest rate loan

30000

zlotys of

3 %

interest rate loan and

70000

zlotys of

3.5 %

interest rate loan

50000

zlotys of

3 %

interest rate loan and

50000

zlotys of

3.5 %

interest rate loan

80000

zlotys of

3 %

interest rate loan and

20000

zlotys of

3.5 %

interest rate loan

1003090505

Level:

The interest rate on deposits in a certain bank initially equaled

5 %

per year but then it was increased by

1.2

percentage point. What was the percentage increase of the interest rate?

24 %

6 %

6.2 %

20 %

1003090506

Level:

The interest rate on deposits in a certain bank initially equaled

5 %

per year but then it was decreased by

20 %

. By how many percentage points has the interest rate decreased?

1

percentage point

1.2

percentage point

2

percentage points

2.1

percentage point

1003090507

Level:

A certain amount of money was put into a bank account for an annual deposit of

3.5 %

per year. After a year the bank paid a tax in the amount of

14

zlotys from the gained interests. What amount was placed on the deposit if the interest tax amounted to

20 %

2000

zlotys

2500

zlotys

3000

zlotys

1400

zlotys

1003090508

Level:

A factory is supplied with raw materials by rail. Due to the renovation of the track, the time of passing the goods from the warehouse to the factory increased by

25 %

. How much did the average speed of carriage on the delivery route decrease?

20 %

25 %

4 %

75 %

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