Answer:
30 envelopes
Step-by-step explanation:
If the Cost of 135 envelopes is Rs 45, then;
135 envelopes = Rs. 45
To get the amount of envelopes Rs. 10 can buy, we can write;
x = Rs. 10
Divide both expressions
135/x = 45/10
45x = 135 * 10
45x = 1350
x = 1350/45
x = 30
Hence Rs. 10 can purchase 30 envelopes
Answer:
1.00 meter.
Step-by-step explanation:
For the first day, she dug eighteen twentieth of a meter = x 1 meter
= meters
The second day, she dug nine twentieth of a mater = x 1 meter
= meters
Total length of the trench = +
=
=
= 1
= 1.35 meters
Total length of the trench is 1.35 meters.
A reasonable estimate of the total length of the trench is 1.00 meter.
Answer:
37.50°
Step-by-step explanation:
The sum of both sides of an angle is 180°.
180° - 142.5° = 37.50°
Answer:
12. x =
15. x =
Step-by-step explanation:
12. 7 = 49
=
= 7
=
x =
15. =110
3* = 110*3
= 330
=
x =