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Start learning 50% faster. Sign in nowLet, number of book and number of pen sold by shopkeeper be 21x and 12x respectively. Number of pencil sold by shopkeeper = 11/4 × 12x = 33x So, 21x × 40 + 12x × 20 + 33x × 10 = 21150 ⇒ 840x + 240x + 330x = 21150 ⇒ 1410x = 21150 x = 15 Number of pen sold by shopkeeper = 12x = 180
If 32x + 1– 3x= 3x + 3– 32, then values of x are:
(560 ÷ 32) × (720 ÷ 48) = ?
72% of 486 – 64% of 261 = ?
56 × 18 + ? × 21 – 49 × 12 = 63 × 26
√4096 + √3249 = (?)2
125% of 80 – 6 × 4 = ? × 13 – 54
((1024)n/5 × (42n+1 ))/(16n × 4n-1 ) = ?