# maths

increase 35% of 70
1.35 X 70= 94.5
1 of 5
two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is...
First number: 120% of x= 120x/100=6x Second number: 150% of x= 150x/100=3x/2. Ratio of first two numbers= (6x/5:3x/2)= 12x:15x=4:5
2 of 5
solve the equation: 3x-4=9x+8
9x-3x=6x so, -4=6x+8 now, -8 from both sides. -12=6x so divide 6 by -12=-6
3 of 5
decrease 75% by 5
0.75 X 5=3.75
4 of 5
there are 6 red balls in a bag and 1/2 blue balls, what is the ratio of red:blue balls?
6 red and 1/2 or 0.5 blue balls so, 6:1:2
5 of 5

## Other cards in this set

### Card 2

#### Front

two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is...

#### Back

First number: 120% of x= 120x/100=6x Second number: 150% of x= 150x/100=3x/2. Ratio of first two numbers= (6x/5:3x/2)= 12x:15x=4:5

### Card 3

#### Front

solve the equation: 3x-4=9x+8

#### Back ### Card 4

#### Front

decrease 75% by 5

#### Back ### Card 5

#### Front

there are 6 red balls in a bag and 1/2 blue balls, what is the ratio of red:blue balls?

#### Back 