exam Maths Puzzle Numerical Ability

Determine x for 102x + 1 = 100 x.
a. x = -1
b. x = 2
c. x = 0
d. No solution

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exam Other Question

Solve each system by the addition method

2x+3y+11
7x-4y+6

and

2x-y=-5
3x+2y=3
A Chemist ahs 25% and a 50% acid soultion. How much of each soultion should be used to form 200 ml of a 35% acid soultion.