In an examination, Kofi scored x% in Physics, 50% in Chemistry and 70% in Biology. If his mean score for the three subjects was 55%, find x

Similar Questions

If P = {1,2,3,4,5} and P $\cup$ Q = {1,2,3,4,5,6,7}, list the elements in Q ...

Find the value of P if the line joining (P, 4) and (6, -2) is perpendicular to the line joining (2, ...

A rectangle with width $\frac{3}{4}$cm and area 3 $\frac{3}{8}$cm$^2$. Find the length...

A man's eye level is 1.7m above the horizontal ground and 13m from a vertical pole. If the pole ...

Evaluate $log_{\sqrt{2}}4+log_{\frac{1}{2}}16-log_{4}32$ ...

In the figure, PS bisects angle QPR. Find the ratio SR:QR. ...

If dy/dx = 2x - 3 and y = 3 when x = 0, find y in terms of x. ...

The base in which the operation was performed was ...

The nth term of a sequence is given by 3.2$^{n-2}$. Write down the first three terms of the sequen...

Two towns, P and Q, are on (4oN 40oW) and (4oN 20oE) respectively. What is the distance between th...