Question 80 (iii)
Find the value of x, if 35 % of ₹ x is ₹ 280.
Given, 35% of ₹ x is ₹ 280. ∴ 35100×x=280⇒x=280×10035 ⇒x= ₹ 800
Question 80 (i)
Find the value of x, if 8 % of x is ₹ 100.
Question 80 (iv)
Find the value of x, if 45 % of x is 405 marks.
Question 80 (ii)
Find the value of x, if 32 % of x kg is 400 kg.
Find the value of x,y and z from the following equation:(i) [43x5]=[yz15]
(ii) [x+y25+zxy]=[6258]
(iii) ⎡⎢⎣x+y+zx+zy+z⎤⎥⎦=⎡⎢⎣957⎤⎥⎦
Question 72 (f)
Find the value of (80−20)×(80+20)