Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 16 15 17 18 16 15 17 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System 9 3/4 + 7 2/17 - 9 1/15 = ? 7 719/1020 9 719/1020 9 817/1020 7 817/1020 7 719/1020 9 719/1020 9 817/1020 7 817/1020 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020
Number System 2536+4851—?=3450+313 4567 3624 5243 6784 4567 3624 5243 6784 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System 75% of 250 - ?% of 380 = 54.5 33 31 39 35 33 31 39 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 250 x 75/100 - 380 x ?/100 = 54.5= 250 x 75 - 380 x ?= 54.5 x 100= 18750 - 380 x ?= 5450= 380 x? = 18750 - 5450= 13300= ? = 13300/380 = 35
Number System 64% of 2650+40% 0f 320=? 1578 1824 2096 1247 1578 1824 2096 1247 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ? 21 litre 17 litre 25 litre 29 litre 21 litre 17 litre 25 litre 29 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Original mixture = 5 litre; Milk = 3.5 litre;Water = 1.5 litre Let x litre of milk be added so thatthe mixture becomes (x + 5) litres and the percentage of water becomes 5%So, 1.5 = (x + 5) x 5/10030 = x + 5∴ x = 25 litre
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