Question
How many kilograms of wheat, priced at Rs 6.4/kg, should
be mixed with 10 kg of gram flour priced at Rs 4.8/kg, such that by selling the mixture at a 20% profit, the selling price  is Rs. 1.12 more than the average cost price per kg of both varieties of the mixture?Solution
ATQ, we can say that Let the quantity of Rs 6.4/kg be a kg. S.P of mixture= Rs [1.12 + (6.4 + 4.8)/2]=1.12 + 5.6= Rs 6.72 According to question, =>(a × 6.4 + 4.8 × 10) × 120/100= 6.72(a + 10) =>6.4a × 120/100 + 48 × 120/100= 6.72a + 67.2 =>0.96a= 9.6  a= 9.6/0.96= 10kg.
What will come in the place of question mark (?) in the given expression?
(63 - ?) ÷ 5 + √625 = 19 X (9 - 6)
- What will come in place of (?), in the given expression.
(4² + 6²) × 2 = ? What will come in the place of question mark (?) in the given expression?
(40/25) X 80 - ? = 45% of 300 - 5525.6% of 250 + √? = 119
1220 ÷ 61 ÷ 5 + 450 of 20% - 70 = √ ?
Simplify the expression:
(5x + 15) / (x² + 3x)
What will come in the place of question mark (?) in the given expression?Â
435 ÷ 29 X 792 ÷ 44 = √(? + 14) + 35 + 221 ÷ 17
...192.251 + 326.233 + 125.021 + 19.273 = ?
36% of 640 – 12.5% of 352 + 25% of 640 = ? – 48% of 432
Simplify the following expressions and choose the correct option.
18 * 15 - {3/5 of 250 + 72}
