book Maths Puzzle Numerical Ability

"A purse contains 22 coins, some of wich are dimes and the rest, quarters, Altogether, the coins are worth more than $3.40. At least how many of the coins are quarters? At most how many are dimes?
Please help me!"

Read Solution (Total 0)

book Other Question
In which of the following is y a function of x

a. 3y+2x-9=0
b. x+y^2=5
c. x^2+y^2=25
d. noone of these x-3 over x-2 + x+1 over x+3 equals 2x squared +x+1 over x squared +x-6
for some reason my solution is x= -5 and in the andswer section of my book the solution is x= 6. am I right or wrong?