Question
Tap A and Tap B fill a drum of volume 408 liters in 12
minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cistern 40.8 minutes. Find x-y.Solution
                    A+B         B Time         12   :  40.8 Efficiency    40.8  :    12                          34  :    10 Efficiency of A+B = 34 Efficiency of B = 10 Efficiency of A = 34 – 10 = 24 Ratio = x:y = 24:10 So, x – y = 24 – 10 = 14
32.5% of 40 + (13)2 + 102 = ?
(342 – 20% of 5280) = ? ÷ 3
Find the simplified value of the given expression.
(7.5 × 12 – 3.5 × 6) ÷ 3 ...

14 × 11 + 25 – ? = 21% of 300
- What will come in place of (?) in the given expression.
√324 + √121 – √49 = ? 
62 + 43 + 625(1/4) - ? = 102
9999² + 1111² =?
Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7