Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2018-07-17 01:05:47



Question 1 : A boy when asked to multiply a number by 7/8, divided this instead , by 7/8 and found the answer 15/14 too great.Find the number and correct answer?

Question 2: Find the number , one sixth of which exceeds its one-ninth by 654 ?

Question 3 : Divide 600$ among A,B and C so that $40 more than 2/5 of A's share , $20 more than 2/7 of B's Share , $10 more than 9/17 of C's Share may be equal?

#2 2018-07-17 06:31:44

bob bundy
Registered: 2010-06-20
Posts: 8,524

Re: Questions


The way I do questions like these is to call the unknown number x, and then build an equation using the information given.

So for Q1, let the number be x.  Then the true answer is 7x/8 and the wrong answer is 8x/7.  These differ by 15/14.  So make an equation out of this and solve for x.

If you post your attempt we can move on to the others.


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob Bundy smile


Board footer

Powered by FluxBB