A. Rs.420
B. Rs.400
C. Rs.375
D. Rs.380
Explanation:
441 = P(21/20)2
P = 400
A. Rs. 1505
B. Rs. 1510
C. Rs. 1500
D. Rs. 1490
E. None of these
Explanation:
Let the cost price of an article be Rs. x.
(19% of x) – (12% of x) = 105
19x/100 – 12x/100 = 105 => 7x = 105 * 100
=> x = 1500
Cost price = Rs. 1500
A. Rs.21.60
B. Rs.24.00
C. Rs.25.20
D. Rs.27.80
E. None of these
A. 33 1/3 %
B. 9 1/11 %
C. 11 1/9 %
D. 66 2/3 %
E. None
A. 5km/hr
B. 8 km/hr
C. 10 km/hr
D. 15 km/hr
A. 5/4
B. 4/7
C. 5/6
D. 6/7
E. None of these
Explanation:
Let the fraction be x/y.
When the numerator decreased by 25% and the denominator decreased by 20%.
(x * 3/4)/(y * 4/5) = 3/4 => x/y = 3/4 * (4/5)/(3/4) = 4/5
A. 200 sq cm
B. 72 sq cm
C. 162 sq cm
D. Cannot be determined
Let the side of the square be a cm. Let the length and the breadth of the rectangle be l cm and b cm respectively.
4a = 2(l + b)
2a = l + b
l . b = 480
We cannot find ( l + b) only with the help of l . b. Therefore a cannot be found .
Area of the square cannot be found.