###### Class 10 Maths Tutorials

#### x ∝ y2 and y = 2a when x = a, then show that y2 = 4ax . ( WBBSE – 2019 )

x ∝ y2and y = 2a when x = a, then show that y2 = 4ax . Solution : x ∝ y2 ⇒ x = ky2 ——————-( 1 ) where k is variation constant . Read more…

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x ∝ y2and y = 2a when x = a, then show that y2 = 4ax . Solution : x ∝ y2 ⇒ x = ky2 ——————-( 1 ) where k is variation constant . Read more…

If ( a / 2 ) = ( b / 3 ) = ( c / 4 ) = ( 2a – 3b + 4c ) / ( p ), then find p. Given : Read more…

In a partnership business the ratio of capitals of three men is 3 : 5 : 8 . The share of profit of the first member is Rs. 60 less then that of the third Read more…

Level – 01 1 ) Factorise : x2 + 7x + 12 Solution : x2 + 7x + 12 = x2 + (4 + 3 ) x + 12 = x2 + 4x + 3x + 12 = x Read more…

Question : Find the capital which gives ₹ 1 as interest per month at 5 % rate of interest per annum. solution : Interest ( I ) = ₹ 1 Time ( T ) = Read more…

The different between the simple interest the compound interest of ₹100 in 1 year at the rate of 10% p.a is Rs.1. Answer : False Explanation : Principle (P) = ₹ 100 Rate of interest Read more…

The compound ratio of ab :c2, bc : a2 and ca : b2 is 1:1. Answer : True Explanation : The given ratios are ab :c2 bc : a2 ca : b2 Compound Ratio of Read more…

If the product and sum of two quadratic surds is a rational number then surds are _______ surd. Answer : Complementary or conjugate . Explanation : Let us consider that { √a + b) } Read more…

A person deposited ₹ 100 in a bank and gets the amount ₹ 121 after two years . The rate of the compound interest is ______% . Answer : 10% Explatation : Principal (P) = ₹ Read more…