Question
Harvey, Mike, and Donna started a business together,
with the ratio of Harvey's investment to Mike's being 5: x, and the ratio of Mike's investment to Donna's being 7:8. After 3 years, Donna's share of the total profit of Rs. 19,000 is Rs. 6,400. Determine the value of x.Solution
Ratio of investments: Harvey: Mike = 5: x Mike: Donna = 7: 8 Harvey: Mike: Donna = 35: 7x: 8x According to question, 8x/(35 + 7x + 8x) = 6400/19000 8x/(35 + 15x) = 32/95 760x = 32×35 + 32×15x 760x – 480x = 1120 280x = 1120 x = 112÷28 = 4
447.8 × 441.2 ÷ 445 = 44 × 44?
(9/13) of (6/11) of (3/5) of 44% of 6500 = ? - (40)2 + (46)2 - (58% of 1850) - (616 ÷ 8.8)
72 × 2 = ? + 104 – 14
72.5% of 400 – 23.25% of 1020 = 105% of ?
What value should come in the place of (?) in the following questions?
√289 * 2 +3√729 * 3 + 24 ÷ 8 = ?2
What will come in the place of question mark (?) in the given expression?
(63 - ?) ÷ 5 + √625 = 19 X (9 - 6)
75% of 65% of 7/5 of 2420 = ?
What will come in the place of question mark (?) in the given expression?
(30% of 1200 + 50% of 3200) ÷ 98 = ?
180 % of 45 + √144 × 8 = ?2  + 80 % of 70
15848 ÷ 4 – 793 × 6 + 3628 = 3 × ?
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