31.2 * 14.5 * 9.6 = ________?
31.2 * 14.5 * 9.6 = ________?
A. 4334.04
B. 4243.04
C. 4343.04
D. 4433.04
Explanation:
? = 4343.04
Similar Posts
If 25% of x is 15 less than 15% of 1500, then x is?
If 25% of x is 15 less than 15% of 1500, then x is?A. 720
B. 750
C. 820
D. 840
E. None of these
Explanation:
25% of x = x/4 ; 15% of 1500 = 15/100 * 1500 = 225
Given that, x/4 = 225 – 15 => x/4 = 210 => x = 840.If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was__________?
If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was__________?A. 1,20,000
B. 1,10,000
C. 1,00,000
D. 90,000
Explanation:
X * (105/100) * (105/100) * (105/100) = 138915
X = 138915/1.157625
X = 120000A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?
A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?A. 5
B. 6
C. 7
D. 8
Part of work completed by A in a day = 1/21 Part of work completed by B in a day = 1/24 Part of work completed by them together in a day = (1/21)+(1/24)
= 5/56 Part of work completed by B in 9 days
= 9/24 = 3/8 If A left after x days,
(5x/56)+(3/8) = 1
x = 7The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is___________?
The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is___________?A. 982
B. 893
C. 1024
D. 995Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?A. 344
B. 355
C. 366
D. 377The edges of a cuboid are in the ratio 1 : 2 : 3 and its sunface area is 88 cm2. The volume of the cuboid is :_________?
The edges of a cuboid are in the ratio 1 : 2 : 3 and its sunface area is 88 cm2. The volume of the cuboid is :_________?A. 24 cm3
B. 48 cm3
C. 64 cm3
D. 120 cm3
Let the dimensions of the cuboid be x, 2x and 3x.
Then, 2 (x X 2x + 2x X 3x + x X 3x) = 88
⇔ 2X2 6X2 + 3X2 = 44 ⇔ 11X2 = 44 ⇔ X2 = 4 ⇔ x = 2.
Volume of the Cuboid = (2 X 4 X 6) cm3 = 48 cm3.