Question
A certain number is to be subtracted from 90 and 72 to get
the numbers in the ratio 5:4. What is the number?Solution
ATQ,
Let the number be 'y'.
(90 - y) : (72 - y) = 5 : 4
→ 4 × (90 - y) = 5 × (72 - y)
→ 360 - 4y = 360 - 5y
→ y = 0
So, y = 0
More No. System Questions
{(80% of 650 + 25 × 12) – 20 × ?} = 760
- What will come in place of (?), in the given expression.
125% of 96 + 33% of 300 = ? 20% of 550 × 25% of 80 = ?2 × 22
(96% of 1100) + 92 × 4 = ? + 46 × 16
- Find the simplified value of the given expression.
1024 ÷ 16 + 800 ÷ √64 + ? = 200 * 2
5.45% of 1854 – 37.5% of 1096 = ? – 48% of 630
√ (12+√ (12+√ (12+ ⋯ ∞ ))
74% of 2840 + 80% of 1640 - ?= 47²
4.56 + 56.4 + 64.5 = ? + 10.46
