41. January 1, 2007 was Monday. What day of the week lies on Jan. 1, 2008?
Answer:
Explanation:It will be tuesday..
because (jan1, 2008)-(jan1,2007)=365 days=52 weeks 1 day.
next day to monday is Tuesday
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42. What is the ratio of (1/4 )to the power 3 and (1/4) to the power 4?
Answer:
Explanation:1/4 to the power 3 = 0.015625…...(1)
1/4 t0 the power 4 = 0.00390625…....(2)
Dividing (1) by (2), we get 4.
Hence ratio is 4:1
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43. In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cows is___?
Answer:
Explanation:7 hens (7 heads, 14 legs)
7 cows (7 heads, 28 legs)
total legs 42
total heads 14 twice then 28 then legs 14 more than head
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44. Six years ago I was three times as old as my brother, and now I am twice as old my brother. Find my brother's age.
Answer:
Explanation:Let brother's age = x
And my age = 2x
6 years ago:
Brother age = x-6
My age = 2x-6
I was 3 time his age then,
2x-6 = 3(x-6)
2x-6 = 3x-18
3x-2x = 18-6, x = 12
Brother's age = 12years
My age now = 2x= 2(12)= 24years
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45. In a market survey, 20% opted for product A whereas 60% opted for product B. The remaining individuals were not certain. If the difference between those who opted for product B and those who were uncertain was 720, how many individuals were covered in the survey ?
Answer:
Explanation:A=20%
B=60%
Therefore Uncertain=100-(60+20)=20%
Diff bw B and uncertain=720
so Uncertain(%=amt)
ie.(720/20)*100=1800
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46. A polygon has 44 diagonals. Find number of sides?
Answer:
Explanation:no. of diagonals=[n(n-3)]/2
n=no. of sides
44=(n2-3n)/2
n2-3n-88=0
n2-11n+8n-88=0
n=11
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47. The Largest measuring cylinder that can accurately fill 3 tanks of capacity 98, 182 and 266 liters each, is of capacity.
Answer:
Explanation:When there largest or greatest we should take HCF. So
HCF of 98,182,266 is 14. So, 14 is the answer.
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48. The price of nylon ribbon was rs 35 per square metre in january.few months later it was marked up by rs 25. what is the percentage increase in the price of nylon ribbon?
Answer:
Explanation:if there is no discount then
SP=MP
therefore 100%= 35
?% = 25
so percentage increase is= 71.42%
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49. 70% of x is greater than 1/3rd of x by 110. What is x?
Answer:
Explanation:70x/100=1x/3+110
7x/10-1x/3=110
(21-10)x/30=110
x=110*30/11
x=300
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50. The average age of a woman and her daughter is 16 years. The ratio of their ages in 7 : 1 respectively. What is the woman’s age?
Answer:
Explanation:The average age of a woman and her daughter is 16 years.
sum of ages = 16*2=32 years.
The ratio of their ages in 7 : 1 say 7x and x.
then, 8x = 32
x=4
Then age of woman = 7x = 28 years
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