Basic Maths and Reasoning MCQs (page 32 of 212)

Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.

Practise 10 questions Timed test

4,221 questions. Select an option to check your answer, or open "Show answer". Showing 621–640.

621.
A price of Rs 800 decreases by 20%. What is the new price?
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Answer: A. Rs 640
20% of 800 = 160. Rs 800 − 160 = Rs 640.
622.
A price of Rs 1,120 increases by 15%. What is the new price?
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Answer: C. Rs 1,288
15% of 1,120 = 168. Rs 1,120 + 168 = Rs 1,288.
623.
A price of Rs 400 increases by 10%. What is the new price?
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Answer: D. Rs 440
10% of 400 = 40. Rs 400 + 40 = Rs 440.
624.
A price of Rs 1,860 increases by 20%. What is the new price?
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Answer: D. Rs 2,232
20% of 1,860 = 372. Rs 1,860 + 372 = Rs 2,232.
625.
A price of Rs 780 decreases by 15%. What is the new price?
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Answer: B. Rs 663
15% of 780 = 117. Rs 780 − 117 = Rs 663.
626.
A price of Rs 1,260 decreases by 50%. What is the new price?
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Answer: C. Rs 630
50% of 1,260 = 630. Rs 1,260 − 630 = Rs 630.
627.
What is the LCM of 36 and 53?
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Answer: C. 1,908
The lowest common multiple of 36 and 53 is 1908. Check: LCM × HCF = 1908 × 1 = 1908 = 36 × 53.
628.
What is the LCM of 26 and 30?
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Answer: B. 390
The lowest common multiple of 26 and 30 is 390. Check: LCM × HCF = 390 × 2 = 780 = 26 × 30.
629.
What is the HCF of 8 and 46?
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Answer: B. 2
The highest number dividing both 8 and 46 exactly is 2.
630.
What is the LCM of 10 and 43?
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Answer: B. 430
The lowest common multiple of 10 and 43 is 430. Check: LCM × HCF = 430 × 1 = 430 = 10 × 43.
631.
What is the HCF of 15 and 39?
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Answer: B. 3
The highest number dividing both 15 and 39 exactly is 3.
632.
What is the HCF of 44 and 54?
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Answer: B. 2
The highest number dividing both 44 and 54 exactly is 2.
633.
What is the HCF of 18 and 35?
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Answer: A. 1
The highest number dividing both 18 and 35 exactly is 1.
634.
What is the LCM of 20 and 29?
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Answer: C. 580
The lowest common multiple of 20 and 29 is 580. Check: LCM × HCF = 580 × 1 = 580 = 20 × 29.
635.
What is the LCM of 22 and 26?
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Answer: B. 286
The lowest common multiple of 22 and 26 is 286. Check: LCM × HCF = 286 × 2 = 572 = 22 × 26.
636.
What is the HCF of 11 and 60?
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Answer: A. 1
The highest number dividing both 11 and 60 exactly is 1.
637.
What is the HCF of 14 and 22?
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Answer: B. 2
The highest number dividing both 14 and 22 exactly is 2.
638.
What is the LCM of 11 and 14?
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Answer: B. 154
The lowest common multiple of 11 and 14 is 154. Check: LCM × HCF = 154 × 1 = 154 = 11 × 14.
639.
What is the LCM of 40 and 50?
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Answer: B. 200
The lowest common multiple of 40 and 50 is 200. Check: LCM × HCF = 200 × 10 = 2000 = 40 × 50.
640.
What is the HCF of 39 and 60?
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Answer: B. 3
The highest number dividing both 39 and 60 exactly is 3.