A. 200
B. 400
C. 1600
D. 800
Explanation:
15625 * 8 + 35000 = (?)2
=> (?)2 = 125000 + 35000 = 160000
=> ?2 = 4002
? = 400
A. 45 cm
B. 40 cm
C. 36 cm
D. 27 cm
Let the three sides be 4x,3x and 2x. 4x+3x+2x = 81 9x = 81 x = 9 Length of the largest side
= 4x = 36 cm
A. Rs. 6400
B. Rs. 6500
C. Rs. 7200
D. Rs. 7500
Let the sum invested in Scheme A be Rs. x and that in Scheme B be Rs. (13900 – x).
then , (x*14*2/100)+(13900-x)*11*2/100) =3508
28x – 22x = 350800 – (13900 x 22)
6x = 45000
x = 7500.
So, sum invested in Scheme B = Rs. (13900 – 7500) = Rs. 6400.
A. 10670
B. 106470
C. 104670
D. 107470
A. 20% loss
B. 20% gain
C. 25% loss
D. 25% gain
Explanation:
Let C.P. of each article be Re. 1.
Then, C.P. of 50 articles = Rs. 50;
S.P. of 50 articles = Rs. 40.
Loss % = 10/50 * 100 = 20%
A. 55/601
B. 601/55
C. 11/120
D. 120/11
Explanation:
Let the numbers be a and b.
Then, a + b = 55 and ab = 5 * 120 = 600.
Required sum = 1/a + 1/b = (a + b)/ab = 55/600 = 11/120.
A. 27 m
B. 24 m
C. 18 m
D. 21 m
Let the length and the breadth of the floor be l m and b m respectively.
l = b + 200% of b = l + 2b = 3b
Area of the floor = 324/3 = 108 sq m
l b = 108 i.e., l * l/3 = 108
l2 = 324 => l = 18.