Question
245 ml of mixture contains milk and water in the ratio
of 10:x respectively. If 45 ml of water and 55 ml of milk is added into it then ratio of milk to water in the resulting mixture will be 2:1. Find the value of lsquo;xrsquo;. STSolution
Quantity of milk in 245 ml of mixture = 245 times; 10/(10 + x) Quantity of water in 245 ml of mixture = 245 times; x/(x + 10) According to question; {2450/(10 + x) + 55}/{245x/(x + 10) + 45} = 2/1 Or, 2450/(10 + x) + 55 = 490x/(x + 10) + 90 Or, (2450 ndash; 490x)/(x + 10) = 35 Or, 2450 ndash; 490x = 35x + 350 Or, 525x = 2100 Or, x = 4
15.99% of 549.99 ÷ 11.17 = ? ÷ 20.15
74.91% of 639.95 – 599.98% of 45 + 119.987 = ?
(4.88 × 5.76)2 - ?2 = 39.89 × 19.86
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
(1800.23 ÷ 29.98) + (816.32 ÷ 23.9) + 1634.11 = ?
1449.98 ÷ 50.48 × 10.12 = ? × 2.16
36.05 × 5.02 + 12.052 = ? + 9.09 × 4.04Â
(31.9)3 + (34.021)² - (16.11)3 - (42.98)² = ?