There are 77 students in the student council. the ratio of girls to boys is 7: 4 how many girls are in the student council? what is the ratio of girls to students

There are 49 girls on the student council

Girls: total

     7:11

Step-by-step explanation:

girls : boys: total

7        :      4 :  7+4

7       :      4  :    11

We have 77 students total

77/11 = 7

So multiply each  by 7

girls : boys: total

7*7    :  4*7:  11*7

49     :  28 :   77

There are 49 girls on the student council.

Girls : students

49:77

Divide by 7

49/7 : 77/7

7 : 11

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!