Maths Practice Question and Answer
8 Q: A person has 12 bananas for Rs 24. Sell in So he got the benefit of 25 percent. How many bananas he buy in Rs. 40?
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60373d3ccd43d04a8f4a7767- 130false
- 225true
- 340false
- 445false
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Answer : 2. "25"
Q: (2x + 4) and (x - 1) are the angle pairs of angles of measurement, then their measurement will be
1617 05f758e2be487e60dceccf919
5f758e2be487e60dceccf919- 140°, 140°false
- 250°, 130°true
- 354°, 126°false
- 4122°, 58°false
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Answer : 2. "50°, 130°"
Q: In how much time compound money at compound interest of half yearly rate of Rs 800 will be Rs 926.10?
1617 05f8014d188aba328edada09e
5f8014d188aba328edada09e- 1$$ {1}{1\over3}year$$false
- 2$$ {1}{1\over2}year$$true
- 3$$ {2}{1\over3}year$$false
- 4$$ {2}{1\over2}year$$false
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Answer : 2. "$$ {1}{1\over2}year$$"
Q: The sum of weights of A and B is 80 kg. 50% of A's weight is $${5\over6}$$ times the weight of B. Find the difference between their weights.
1617 064ccef6ba919c8488e304799
64ccef6ba919c8488e304799- 120 kgtrue
- 210 kgfalse
- 325 kgfalse
- 415 kgfalse
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Answer : 1. "20 kg"
Explanation :
Let's denote the weight of A as 𝑥x kg and the weight of B as 𝑦y kg.
Given:
- 𝑥+𝑦=80x+y=80 (Sum of weights of A and B is 80 kg)
- 0.5𝑥=56𝑦0.5x=65y (50% of A's weight is 5665 times the weight of B)
We can solve these two equations to find the values of 𝑥x and 𝑦y, and then calculate the difference between their weights.
From equation 2: 0.5𝑥=56𝑦0.5x=65y Multiply both sides by 2 to get rid of the fraction: 𝑥=56𝑦×2x=65y×2 𝑥=106𝑦x=610y 𝑥=53𝑦x=35y
Now substitute this expression for 𝑥x into equation 1: 53𝑦+𝑦=8035y+y=80 83𝑦=8038y=80 Multiply both sides by 3883: 𝑦=80×38y=80×83 𝑦=30y=30
Now that we have found the weight of B, we can find the weight of A using equation 1: 𝑥+30=80x+30=80 𝑥=80−30x=80−30 𝑥=50x=50
So, the weight of A is 50 kg and the weight of B is 30 kg.
Now, let's find the difference between their weights: Difference=Weight of A−Weight of BDifference=Weight of A−Weight of B Difference=50−30Difference=50−30 Difference=20Difference=20
Therefore, the difference between their weights is 20 kg.
Q: In a school there are total 414 students. The ratio of boys and girls is 5 : 4. If 46 more boys gets admitted into the school, then what will be the new ratio of boys and girls?
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644fa0c57f825208660ec492- 13 : 1false
- 24 : 3false
- 35 : 2false
- 43 : 2true
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Answer : 4. "3 : 2"
Q: Vivek is 30% more efficient than Neha. How much time will they, working together, take to complete a job which Vivek alone could have done in 23 days?
1616 06142c18f7bf581140ee3d465
6142c18f7bf581140ee3d465- 113 daystrue
- 255 daysfalse
- 314 daysfalse
- 417 daysfalse
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Answer : 1. "13 days "
Q: A man spends 75 % of his income. His income increased by 20 % and he increased his expenditure by 15 %. His savings will then be increased by:
1616 05dd62d81c2282c484e4b4bf1
5dd62d81c2282c484e4b4bf1- 133%false
- 2$$33{1\over 3}\% $$false
- 335%true
- 440%false
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Answer : 3. "35% "
Q: If apples are bought at the rate of 30 for a rupee. How many apples must be sold for a rupee to gain 20%?
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60acc670d752621d4f9c7739- 120false
- 222false
- 328false
- 425true
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