Answer:
The total number of pupils and their teachers = 530
Step-by-step explanation:
No. of girls in the school = 280
The ratio boys to girls is 3:4 and that of teachers to girls is 1:7
∴ The ratio boys to girls is 3x : 4x where, 4x = 280
and The ratio of teachers to girls is x : 7x where, 7x = 280
4x = 280
= x
70 = x
So, the no. of girls in the school = 4x = 4(70) = 280 and the no. of boys in the school = 3x = 3(70) = 210
7x = 280
= x
40 = x
So, the no. of girls in the school = 7x = 7(40) = 280 and the no. of teachers in the school = x = 40
∴ The total number of pupils and their teachers = 280 + 210 + 40
= 530
Answer:
Multiply the ones. 8 times 95 is 760. Multiply the tens. 20 times 95 is 1,900. Add the products to get 2,660.
Step-by-step explanation:
Multiply the ones. 8 times 95 is 760. Multiply the tens. 20 times 95 is 1,900. Add the products to get 2,660.
We are given with the expression 3/a - 9b = y and is asked to simplify the given equation. in this case, the first step is to multiply both terms with a. this results to 3 - 9 ab. = ay Since the two terms have different variables, this is the simplified form. the answer is <span>3 - 9 ab = ay </span>
Answer:
x
=
6
,
−
4
Step-by-step explanation: