1000+ Commercial Bank of Ethiopia Exam Question and Answer Pdf - 1

Ans: D

Number that ends with 1 or 9 when squared we get the result ending with digit 1.

Therefore, every 10 consecutive numbers consists of two such numbers whose square ends with digit 1.

Here 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69 are the numbers.

∴ Percentage of such numbers = $${14}/{70} × 100$$ = 20%.

Ans: B

Let the original price of commodity be Rs. x

Due to decrease in price by 10%, new price = 0.9x.

Selling quantity increased by 30%

∴ Effect on revenue = 0.9x × 1.3 = 1.17x

∴ Selling of commodity increased by 17%.

Effect on revenue = (-10 + 30 - 3)% = 17%.

Ans: D

The students who do not read Hindi = 100 - 70 = 30

Number of boys = 40; Number of girls = 60

Number of girls who does not read Hindi = 20% of 60 = 12

Number of boys who does not read Hindi = 30 - 12 = 18

∴ No. of boys who reads Hindi = 40 – 18 = 22

∴ Percentage of boys who read Hindi = $${22}/{40}$$ × 100 = 55%.

Ans: C

Let the monthly income of Manoj be 100.

∴ Ashok’s income = $${90}/{100}× 100$$ = 90

Monthly income of Anil = $${130}/{100} × 90$$ = Rs. 117

Difference between income of Anil and Manoj = 117 - 100 = Rs. 17

∴ Monthly income of Ashok for a difference in salary of Rs. 1360

= $${90}/ {17} × 1360$$ = Rs. 7200.

Ans: D

Rohit spends for foods = 40%

Rohit spends for rent = 20%

Rohit spends for entertainment = 10%

Rohit spends for conveyance = 10%

Total = 80%

∴ Savings = 100 – 80 = 20% of his salary = 1500

∴ His monthly salary = $${1500} / {20/100}$$ = $$1500 × {100}/ {20}$$ = Rs. 7500