For the following questions answer them individually
The cost price of 25 articles is equal to thesellingprice of 20 of them. The gain or loss percent is given by
A shopkeeper makes a profit of 20% even after giving a discount of 12%.9n the marked price ofan article. If marked price is ₹ 506 then the cost price
‘of the article is
If 40% of (A + B) = 60% of (A - B) then $$\frac{2A-3B}{A+B}$$ is
A number is first increased by 10% and then it fs.further increased by 20%. The original numberis increased altogether by
If a train runs at 40 km/hour, it reaches its destination late by 11 minutes. But if it runs at 50 km/hour, it is late by 5 minutes only. The correc’t time {in minutes) for the train to complete the journey is
A tree increases annually by $$\frac{1}{8}th$$ By how much will it-increase after 2 years, if it stands today 64 cm high?
If $$2^{x+3}$$=32 then the value of $$3^{x+1}$$ is equal to
If $$x+\frac{1}{x}$$=2, $$x \neq 0 $$ then the value of $$x^{2} + \frac{1}{x^{3}}$$ is equal to
If $$\frac{a}{b} + \frac{b}{a} = 1, a \neq 0 b \neq 0$$ the value of $$a^{3} + b^{3}$$ is
If $$a^{2} + b^{2} + c^{2} + 3 = 2(a + b + c)$$ then the value of $$(a + b + c)$$ is
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