Question
Find the missing term: 30Â Â Â Â Â Â
22.5Â Â Â Â Â Â Â Â Â 15Â Â Â Â Â Â 9.375Â Â Â Â Â Â Â ?Solution
30 × 1.5 ÷ 2 = 22.5 22.5 × 2 ÷ 3 = 15 15 × 2.5 ÷ 4 = 9.375 9.375 × 3 ÷ 5 = 5.625
If the ratio of the areas of two triangles is 4:3 and the ratio of their heights is 3:4, then the ratio of the lengths of their bases will be
(p + 3) 2 + (q – 7) 2 + (r + 4)2 = 0, then find the value of p + q – r.

- If 4x + y = 18 and xy = - 10, what is the value of 4x - y?
Solve for x:
3x - 4 = 2x + 5
If 9x² + y² = 37 and xy=2, x, y>0, then the value of (27x³ + y³) is:
A carriage travelling in fog passed along a man who was walking @ 6 km/hr in the same direction. He could see the carriage for 8 minutes and it was visi...

If x = 15, find x5 - 16x4 + 16x3 - 16x2 + 16x - 16 = ?
If a – b – c = 0, then the value of (a2 + b2 + c2)/(b + ac) is: