A. 20 sq m
B. 10 sq m
C. 5 sq m
D. 3 sq m
Explanation:
1/2 * 4 * 5 = 10 m2
A. 3 : 7
B. 7 : 3
C. 6 : 7
D. 7 : 6
A. Rs. 500
B. Rs. 515
C. Rs. 550
D. Rs. 600
Explanation:
110% of S.P. = 616
S.P. = (616 * 100)/110 = Rs. 560
C.P = (110 * 560)/112 = Rs. 500
A. 101
B. 107
C. 111
D. 185
Explanation:
Let the numbers be 37a and 37b.
Then, 37a * 37 b = 4107 => ab = 3
Now, co-primes with product 3 are (1, 3).
So, the required numbers are (37 * 1, 37 * 3) i.e., (1, 111).
Greater number = 111.
A. 65%
B. 70%
C. 80%
D. 60%
Explanation:
Total area =(30 x 15)Sq.cm =45 Sq.cm
Area used =[(30 – 1.25 x 2) x (15 -2.5 x2)]
=(27.5 x 10)Sq.cm =275 Sq.cm
Percentage of area used =(275/450 x 100)% =61.1%
= 60%(Approx.)
A. 120 cm2
B. 130 cm2
C. 312 cm2
D. 315 cm2
The triangle with sides 26 cm, 24 cm and 10 cm is right angled, where the hypotenuse is 26 cm.
Area of the triangle = 1/2 * 24 * 10 = 120 cm2
A. 8/15
B. 7/15
C. 11/15
D. 2/11
Amount of work P can do in 1 day = 1/15
Amount of work Q can do in 1 day = 1/20
Amount of work P and Q can do in 1 day = 1/15 + 1/20 = 7/60
Amount of work P and Q can together do in 4 days = 4 × (7/60) = 7/15
Fraction of work left = 1 – 7/15= 8/15