Answer:
0.94 grams of salt.
Step-by-step explanation:
Hayley had 3.93 grams of salt.
She added more salt to the sample and now has 4.87 grams.
Let she added x grams of salt.
3.93 + x = 4.87
x = 4.87 - 3.93
x = 0.94 grams
Hayley added 0.94 grams of salt.
6
2nd option
r + 1 = 23 ( subtract 1 from both sides )
r = 22 ( multiply both sides by 3 to clear the fraction )
r = 66 ( divide both sides by )
r = × ( rationalising the denominator )
r = = 33
2 m 30 cm
2 m 60 cm
+
_________
4m 90cm
PERIOD