The amount of water (in ml) that should be added to reduce 9 ml. Lotion, containing 50% alcohol, to a lotion containing 30% alcohol, is__________?
A. 3
B. 4
C. 5
D. 6
Basic Arithmetic
A and B’s salaries together amount to Rs. 2,000. A spends 95% of his salary and B spends 85% of his. If now their savings are the same, what is A’s salary?
A. Rs.500
B. Rs.750
C. Rs.1250
D. Rs.1500
The tax on a commodity is diminished by 20% but its consumption is increased by 10%. Find the decrease percent in the revenue derived from it?
A. 20%
B. 18%
C. 15%
D. 12%
A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs.1000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per new scheme was Rs. 600 more than that by the previous schema, his sales were worth?
A. Rs. 14,000
B. Rs. 12,000
C. Rs. 30,000
D. Rs. 40,000
At an examination in which full marks were 500. A got 10% less than B, B got 25% more than C and C got 20% less than D. If A got 360 marks, what percentage of full marks was obtained by D?
A. 70%
B. 90%
C. 80%
D. 75%
5% people of a village in Sri Lanka died by bombardment, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning?
A. 3800
B. 4200
C. 4400
D. 5500
Explanation:
In a factory, there are 40% technicians and 60% non-technicians. If the 60% of the technicians and 40% of non-technicians are permanent employees, then the percentage of workers who are temporary is________?
A. 32%
B. 42%
C. 52%
D. 62%
Today is khadija’s birthday. After one year, she will become two times as she was ten years ago. current age of Khadija?
A. 19
B. 20
C. 21
D. 22
In what ratio should the profit be divided if M, N, O invests capital in ratio 2:3:5 and their timing of their investments are in the ratio 4:5:6.
A. 8:15:30
B. 5:18:28
C. 4:5:6
D. 2:3:5
If y exceeds x by 20%, then x is less than y by_______?
A. 16%
B. 16 1/3 %
C. 16 2/3 %
D. 16 3/5 %