Question
An alloy of copper and tin contains 85% of copper. If 28
kg of more tin is added to the alloy, the copper content gets reduced to 50%. Find the quantity of the new alloy.Solution
Ratio of copper to tin in the alloy = 17:3 Let the quantity of copper and tin in the alloy be 17x kg and 3x kg, respectively. According to question, 17x = 3x + 28 x = 2 kg So, the quantity of new alloy = 17x + 3x + 28 = 20x + 28 ⇒ 40 + 28 = 68 kg
Three people – R, S and T – began a partnership. R invested 35% more than T, and S invested 65% more than T. If the total yearly profit is Rs. 28000...
'A' and 'B' form a partnership with an initial investment of Rs. 2400 and Rs. 8a. After 6 months, 'A' takes out Rs. 400 from his original investment, an...
Two individuals, 'P' and 'Q', started a business with initial investments of Rs. 5400 and Rs. 6200, respectively. After six months, 'P' increased his in...
Neha and Priya launched a venture by putting in Rs. 9000 and Rs. 7000, respectively. After 10 months, Neha reduced her investment by 20%, and Priya rais...
P started a business with an investment of Rs.12000, after 8 months Q joined him with Rs.15000 and after another 8 months R joined them with Rs. 20000. ...
A, B and C hired a taxi for Rs. 740 and used it for 8, 9, 20 hours respectively. Hiring charges paid by B are:
X, Y, Z enter into partnership with capital contribution Rs. 50000, 20000 and 30000 respectively X is working partner of get 20% of profit for managing...
Kamal invested Rs. T and Rohan invested Rs. (T + 30) for 27 months and 18 months respectively. Their profit ratio is 9 : 8. Find Rohan’s investment.
‘A’, ‘B’ and ‘C’ started a business by investing Rs. 3,000, Rs. 3,600 and Rs. 2,400, respectively. After 6 months, ‘B’ decreased his inv...
‘A’, ‘B’ and ‘C’ entered into a partnership by making investments in the ratio 5:3:9, respectively. At end of the year, if the difference be...
Relevant for Exams:
