Question
A cylindrical metal wire is reformed so that its length
decreases by 20% with no change of volume. Its resistance decreases by:Solution
The correct answer is A
Three partners Karan, Arjun and Mukesh invest Rs 75,000, Rs 90,000, Rs 1,05,000 respectively in a business. Karan receives 12.5% of the profit as Manage...
‘M’ started a business with an investment of Rs. 3000. After 8 months ‘N’ joins the business with an investment of Rs. 2500. If the total profit...
Out of their respective monthly salaries, Soma spends 7/8 and Tina spends 4/5 on various expenses. The salary remaining with Tina after the expenses is ...
- Arun and Meena start a business with investments in the ratio 7:3 respectively. After 4 months, Neha joins with an amount equal to the average of both. If ...
R and S started a business with investments of Rs. ___ and Rs. ___, respectively. After 4 months, X joined them with a capital of Rs. 24,000. After anot...
A and B start a business by investing Rs 40,000 and Rs 60,000 respectively. After 4 months, C joins with Rs 50,000. At the end of one year, the total pr...
A, B and C invest in the ratio 3 : 4 : 5 . After 4 months , A withdraws 1/3 of his capital , B increases his capital by 25% , and C reduces his ...
The investments of A and B in a partnership are Rs. 6000 and Rs. 10000. B withdraws 40% of initial investment after T months. If annual profit is Rs. 70...
Rajiv, Sanju and Tanu started a business with the investment of Rs. (z-400), (z-1000) and (z+200) respectively. After four months, Rajiv decreased his i...
‘P’ and ‘Q’ started a business with investment of Rs. 3,000 and Rs. 4,200, respectively. After 8 months, ‘P’ increased his investment by Rs...
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